Mask Or Stencil Utilized Patents (Class 427/272)
  • Publication number: 20010026120
    Abstract: An electrode plate for display device includes a substrate and a multi-layered conductive film. The multi-layered conductive film includes a lower side amorphous oxide layer, a silver-based layer, and an upper side amorphous oxide layer. The lower side amorphous oxide layer and the upper side amorphous oxide layer are formed of an amorphous and amorphous-like material. The film thickness of the upper side amorphous oxide layer is not larger than 20 nm.
    Type: Application
    Filed: April 30, 2001
    Publication date: October 4, 2001
    Inventors: Kenzo Fukuyoshi, Yukihiro Kimura, Koji Imayoshi
  • Publication number: 20010019807
    Abstract: A single crystal or polycrystalline silicon substrate (100) is formed as a semiconductor substrate. Using a resist (103), an SiO2 film (101) is formed as a first coating on at least part of the outer periphery of the substrate (100). While using this SiO2 film (101) as a mask, the substrate (100) is etched from the first surface side using KOH or the like. The thickness of the substrate is thus decreased to thereby form an opening forming region M, whereas a region of the substrate covered with the first coating is not etched to thereby form a thick portion 140. Then, on a second surface of the substrate (100), a second coating is formed by applying a resist (104) at a region of the substrate other than where opening are to be formed in the region M. The substrate is then etched using the second coating as a mask to form holes, as openings (110), at regions not covered by the second coating.
    Type: Application
    Filed: December 26, 2000
    Publication date: September 6, 2001
    Inventors: Tsutomu Yamada, Yoshihiro Morimoto, Kiyoshi Yoneda
  • Patent number: 6284319
    Abstract: The present invention provides an adhesive filament-bearing adhesive tape comprising an adhesive substrate adapted to be releasably adhered to a surface to be coated, and a filament releasably adhered to an edge of that substrate, that is useful in trimming a coating applied to a surface. The invention further provides a method of trimming a coating applied to a surface comprising applying to the surface to be coated a masking material to define the area to be coated and a filament of material of sufficient tensile strength to cut the coating material; applying coating material to the surface; allowing the coating material to dry or cure until it obtains sufficient strength to hold a cut edge; and drawing the filament through the coating to cut the coating.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: September 4, 2001
    Inventor: Gary D. Langeman
  • Publication number: 20010012541
    Abstract: A method of manufacturing a thin-film magnetic head allowing dimension control of the width of the magnetic pole and reduction of the time required for formation is provided. A layer of iron nitride formed by sputtering is selectively etched with the RIE to form a top pole tip. In this etching process with RIE, chlorine-type gas is selected as a gas seed for etching, and the process temperature is in a range of 50° C. to 300° C. Subsequently, using part of a first mask and a tip portion of the top pole tip as a mask, part of both the write gap layer and the second bottom pole are etched with the RIE similarly to the above process, to thereby form a magnetic pole. The etching conditions are optimized by performing the process with the RIE under the above conditions, so that both of the top pole tip and the magnetic pole can be formed with high precision, and that the time required for forming both of these elements can be significantly reduced.
    Type: Application
    Filed: January 22, 2001
    Publication date: August 9, 2001
    Applicant: TDK CORPORATION
    Inventors: Yoshitaka Sasaki, Atsushi Iijima, Seiji Yari, Katsuya Kanakubo
  • Patent number: 6268015
    Abstract: A method of forming an interconnection, including a spring contact element, by lithographic techniques. In one embodiment, the method includes applying a masking material over a first portion of a substrate, the masking material having an opening which will define a first portion of a spring structure, depositing a structure material (e.g., conductive material) in the opening, and overfilling the opening with the structure material, removing a portion of the structure material, and removing a first portion of the masking material. In this embodiment, at least a portion of the first portion of the spring structure is freed of masking material. In one aspect of the invention, the method includes planarizing the masking material layer and structure material to remove a portion of the structure material. In another aspect, the spring structure formed includes one of a post portion, a beam portion, and a tip structure portion.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: July 31, 2001
    Assignee: FormFactor
    Inventors: Gaetan L. Mathieu, Benjamin N. Eldridge, Gary W. Grube
  • Patent number: 6268017
    Abstract: A method for providing a partial plating to a lead pin, comprising the steps of plating an entire surface of the lead pin; covering a first part of a plated surface of the lead pin by a gel member; and subjecting a second part of the plated surface of the lead pin, which extends out of the gel member, to a metal-coating removing agent, to remove a metal coating of the second part of the plated surface. The plating step may include providing a composite plating on the entire surface of the lead pin, and the subjecting step may include removing an uppermost metal layer of the composite plating by the metal-coating removing agent. The composite plating may include a nickel base layer and a gold uppermost layer deposited on the nickel base layer. The gel member may be formed from a non-oily clay or paper-mache for handcraft use.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: July 31, 2001
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Masayuki Takeuchi, Katsumasa Yoshinari, Kazuyiki Futaki, Kouji Nishimura, Yoshinobu Miyanoo, Ryoji Arai, Nobuyuki Takei
  • Patent number: 6265022
    Abstract: Process of plugging cooling holes (4) of a gas turbine component (1) with an external surface (7), having a cavity (2) and a plurality of cooling holes (4) before coating the gas turbine component (4), characterised in that mask material (6) is applied to the external surface (7) of the component (1) while a fluid is forced through the cooling holes (4), the mask material (6) is thickened while the fluid is forced through the cooling holes (4), the cooling holes (4) are plugged with plug material (6b), the mask material (6a) is removed from the external surface (7) of the component (1), the component (1) and the plugged cooling holes (4) are coated and the plug material (6b) is removed from the cooling holes (4).
    Type: Grant
    Filed: July 14, 2000
    Date of Patent: July 24, 2001
    Assignee: ABB Alstom Power (Schweiz) AG
    Inventors: John Fernihough, Alexander Beeck, Andreas Bögli
  • Patent number: 6165541
    Abstract: An improvement in the immunofixation electrophoresis procedure for detecting proteins in serum, urine or cerebral spinal fluids. Samples are placed on a gel and subjected to electrophoresis for resolving or separating proteins. Thereafter, antisera are applied to the sample areas through openings located on a template. The template includes projections and, the template substantially precludes cross-contamination and the adverse effects of ambient conditions on the integrity of the fluid, such as by the projections contacting, depressing or cutting into the gel to form closed cavities.
    Type: Grant
    Filed: April 29, 1999
    Date of Patent: December 26, 2000
    Assignee: Helena Laboratories Corporation
    Inventors: Mark E. Merchant, Philip A. Guadagno, Suzan Robinson
  • Patent number: 6123985
    Abstract: A membrane-actuated charge controlled mirror (CCM) that exhibits increased deflection range, reduced beam current and improved electrostatic stability is fabricated using a combination of flat panel manufacturing along with traditional MEMS techniques. More specifically, a unique combination of five masking layers is used to fabricate a number of CCMs on a large glass panel. At the completion of the MEMS processing, the glass panel is diced into individual CCMs. Thereafter, the polymer mirror and membrane release layers are simultaneously released through vent holes in the membrane to leave the free-standing CCM.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: September 26, 2000
    Assignee: Solus Micro Technologies, Inc.
    Inventors: William P. Robinson, LeRoy H. Hackett, Philip G. Reif
  • Patent number: 6117485
    Abstract: A vehicle masking material and method of use. The masking material in one embodiment includes a dextrin, a plasticizer, and water. The masking material may additionally include a surfactant. The masking material is applied to a surface which is to be protected from paint overspray or other coating processes, allowed to dry, and the surface is coated (e.g. with paint). After drying of the paint, or other coating, the masking material is removed by water washing.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: September 12, 2000
    Assignee: Cal-West Equipment Company, Inc.
    Inventors: Edward W. Woodhall, Ronald Swidler
  • Patent number: 6106889
    Abstract: Articles such as medical devices are selectively coated with a lubricious coating. A temporary coating, formed from an aqueous solution of a water-soluble polymer of low to moderate molecular weight, is painted onto those portions of the article which are to remain free of any coating in the final product. Then, the entire article is coated with a material which forms a lubricious coating. The article is then soaked in water to loosen the coatings at the locations at which the temporary coating was applied. The coatings are cleanly removed from those locations, leaving an article with a lubricious coating in some portions, and which is uncoated in the remaining portions. The process can be used in coating portions of catheters, surgical gloves, contact lenses, and any other articles which require a lubricious coating only on a portion of the surface of the article.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: August 22, 2000
    Assignee: Biocoat Incorporated
    Inventors: Ellington M. Beavers, Elizabeth G. Pervin
  • Patent number: 6099908
    Abstract: A resin coating pipe wherein a peripheral surface near an end portion of a pipe material (6) is masked through a specified length, and a resin coating layer (7 or 7a) is formed on a rest portion of a surface of the pipe material (6), and the masked portion is made to be an insertion portion (8 or 8a) to be inserted tightly into an inside diameter portion of another fitting member (4), said resin coating layer (7 or 7a) has its end portion being pressurized, and at that portion, a resin connecting portion (17 or 17a) extending along the insertion portion (8 or 8a) and capable of being fitted into an inside diameter portion of another fitting member (4) together with the insertion portion (8 or 8a), is formed.
    Type: Grant
    Filed: May 15, 1998
    Date of Patent: August 8, 2000
    Assignee: Hit Kougyo Kabushiki Kaisha
    Inventor: Jun Hirano
  • Patent number: 6089042
    Abstract: Method of making polarizing glass having integral polarizing and non-polarizing regions disclosed. The method involves applying a protective glass/frit material capable of blocking reducing gas to the surface of the glass to form a desired pattern, exposing the glass to a reducing gas atmosphere to render unprotected glass polarizing, and removing the protective glass/frit material to reveal underlying non-polarizing regions.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: July 18, 2000
    Assignee: Corning Inc.
    Inventors: Sherry Jeanne Gill, Ahmad Sarhangi
  • Patent number: 6086949
    Abstract: A thin film disk and a method for producing the disk having an overcoat with two thickness regions. The thicker overcoat region can be used as a start/stop or loading zone and the thinner overcoat region can be used over the data recording area. This provides increased wear resistance while allowing improved magnetic performance through a reduction in the thickness of the overcoat over the data recording area. The dual thickness regions can be formed using different embodiments of the method. One method sputter deposits a relatively thick layer of overcoat material over the entire disk surface, masks off the portion of the disk for the thick layer, etches the unmasked area to reduce or eliminate the overcoat from the unmasked area, then deposits a second relatively thin layer of overcoat material over the entire surface.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: July 11, 2000
    Assignee: International Business Machines Corporation
    Inventors: Cherngye Hwang, Charles C. H. Lee, Richard Longstreth White
  • Patent number: 6074697
    Abstract: An electrode pattern can be formed on a ceramic electronic part by removing part of a conductive film formed on the surface of a sintered ceramic body, by the following steps: 1) forming a conductive film on the surface of the ceramic body; 2) placing a mask on the conductive film, the mask having an opening corresponding to the electrode pattern to be formed, 3) blasting the ceramic body with an abrasive material so as to remove the conductive film in a region corresponding to the opening in the mask, and 4) removing the mask from the conductive film. The mask is reusable for being repeatedly placed on and removed from conductive films on respective ceramic bodies.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: June 13, 2000
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Ikemoto, Satoru Kawaguchi
  • Patent number: 6063444
    Abstract: A bas-relief is formed on a wooden panel, such as a furniture panel, by using a MYLAR.RTM. stencil having the outline of a design forming the bas-relief and a rubber stamp having a negative of the relief incorporating depth and textural features of the design. The MYLAR.RTM. stencil is laid over the panel and spackle is applied over the stencil to form a spackle layer having the outline of the design. The spackle layer is then embossed with the rubber stamp to provide details of depth in the spackle layer and thus form the bas-relief. The bas-relief is then allowed to dry, is painted or glazed and is covered with a layer of varnish.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: May 16, 2000
    Assignee: Niermann Weeks Company, Inc.
    Inventor: Elizabeth Dax
  • Patent number: 6058738
    Abstract: Method of making polarizing glass having integral polarizing and non-polarizing regions is disclosed. The method involves applying a protective glass/frit material capable of blocking reducing gas to the surface of the glass to form a desired pattern, exposing the glass to a reducing gas atmosphere to render unprotected glass polarizing, and removing the protective glass/frit material to reveal underlying non-polarizing regions.
    Type: Grant
    Filed: October 16, 1998
    Date of Patent: May 9, 2000
    Assignee: Corning Incorporated
    Inventors: Sherry Jeanne Gill, Ahmad Sarhangi
  • Patent number: 6048446
    Abstract: The present invention provides several methods for engraving gravure cylinders much more rapidly and at a higher resolution while, at the same time, reducing the engraving cost. The present invention employs a resist that is deposited onto the surface of a gravure cylinder. The resist is capable of being physically and/or chemically changed in response to being exposed to a form of actinic energy, such as a laser beam. The exposed areas of resist allow a material, such as chromium, to be plated onto the surface of the gravure cylinder to form walls that define cells therebetween. In use, the cells contain ink for printing the desired patterns of text and/or images.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: April 11, 2000
    Assignee: R.R. Donnelley & Sons Company
    Inventor: A. John Michaelis
  • Patent number: 6040000
    Abstract: There is disclosed in a microchannel plate for an image intensifier tube, a fissured material capable of secondary electron emission disposed on a top surface of the microchannel plate. The fissured material has randomized fissures which permit electrons impinging on the material to exhibit increased electron emission along each of the fissures. The fissured material operates as an electron multiplier causing a cascade of electrons for entry into the MCP channels in response to an electron entering a respective one of the fissures. The image intensifier tube includes an evacuated housing with a photo cathode disposed at a first end thereof, and an optic element disposed at a second end thereof. The microchannel plate with the fissured coating on the top surface is disposed in the evacuated housing between the photo cathode and the optic element.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: March 21, 2000
    Assignee: ITT Manufacturing Enterprises, Inc.
    Inventors: Richard F. Floryan, George Hambro
  • Patent number: 5980678
    Abstract: A composite abrasive material is formed by coating a mesh-type material substrate with an adhesive, contacting the substrate with a quantity of hard, abrasive particles, then removing all particles not held by the adhesive within the openings of the mesh-type material. The particles are surrounded with a sinterable matrix material while the particles are temporarily held by the adhesive. The substrate can have the adhesive applied in a pattern, or covering uniformly to cause the particles to adhere in certain areas to achieve a desired pattern. While the particles are held on the substrate, physical force can be applied to orient the particles uniformly; then, a powder can be applied, or the substrate can be applied to a preform. Subsequent treatment with heat and pressure will complete the composite abrasive material.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: November 9, 1999
    Assignee: Ultimate Abrasive Systems, L.L.C.
    Inventor: Naum N. Tselesin
  • Patent number: 5980995
    Abstract: An insulated metallic strip suitable for use in the coils of power transformers and method of producing the same. Following the extrusion of a flat metallic strip of conductive material for winding into a magnet coil, the flat strip having a predetermined thickness and first and second sides bounded by a pair of fully rounded edges, the method of insulating the strip of conductive material by supporting the flat strip in a level state at a predetermined temperature in a vacuum chamber and while in the vacuum chamber applying a liquid coating of resin to the entire first side of the strip and the pair of rounded edges and extending onto the second side of the strip from each of the edges a distance at least as great as about 0.25" to prevent turn to turn discharge.
    Type: Grant
    Filed: January 19, 1999
    Date of Patent: November 9, 1999
    Assignee: ABB Power T&D Company Inc.
    Inventors: Thomas L. Linsenbardt, Norris L. Hill, Hoan Duy Le
  • Patent number: 5942072
    Abstract: A process of making a decorative resilient floor covering is disclosed comprising the steps of applying a first layer of a first curable polymeric material to a substrate. A tape is applied to selected regions of the first layer of the first curable polymeric material after the curing thereof. A second layer of a second curable polymeric material is applied to the cured first layer. A pigmented particulate material is applied to one of the first and second layers prior to the curing thereof. The tape is removed to reveal the first layer and the second layer with the pigmented particulate material.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: August 24, 1999
    Inventor: Gordon McKinnon
  • Patent number: 5900287
    Abstract: A film that exhibits increased scratch resistant characteristics. The film is formed from a layer of crosslinkable oligomeric resin composition on a base. The film is made by: forming the layer of crosslinkable oligomeric resin composition on the base, and curing the resin composition to an extent that the film exhibits a haze decrease of less than or equal to 60 percent after abrading according to the ASTM D-968-81 procedure using 200 milliliters of sand. Preferably, the layer has a microstructure of alternating tips and grooves. Such films are useful in backlit displays which are useful in computers and the like.
    Type: Grant
    Filed: October 31, 1997
    Date of Patent: May 4, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Todd R. Williams
  • Patent number: 5879530
    Abstract: This self-supported, anisotropic conductive film has a partly annealed polymer layer (46) containing through holes, nail-shaped conductive elements (51) filling the through holes, having a central portion and ends, and the central portion of the nails is made from a hard material (52) and each end respectively of a first and a second meltable materials (44, 54).
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: March 9, 1999
    Assignee: Commissariat a l'Energie Atomique
    Inventor: Patrice Caillat
  • Patent number: 5876498
    Abstract: A device for preserving solder paste in the manufacturing of printed circuit board assemblies. In one embodiment, the preserving device has a frame adapted to be positioned on a stencil plate of a solder paste stenciling machine and a cover coupled to the frame. The frame has a wall that is configured to substantially surround at least a portion of the solder paste on the stencil plate between printing cycles. In a preferred embodiment, the wall is configured to surround a working region on the stencil plate defined by the area on the stencil plate that the solder paste contacts during a printing cycle. The cover is coupled to the frame to form a protective compartment that substantially houses the solder paste between printing cycles. As a result, the preserving device restricts the airflow across the solder paste to protect the solder paste from environmental elements within the stenciling machine.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: March 2, 1999
    Assignee: MOMS, Inc.
    Inventor: Curtis C. Thompson, Sr.
  • Patent number: 5858160
    Abstract: Disclosed are decorative surface coverings of the "inlaid" type having embossed patterns in register with inlaid patterns. Disclosed methods include the steps of: applying in a pattern on a first surface of a foamable layer an agent for modifying the foaming of said foamable layer to produce a foamable layer having a pattern of relatively nonfoamable areas and relatively foamable areas; applying a first collection of particulate resinous material substantially only to said areas containing said foaming modifier or only to said areas not containing said foaming modifier; and foaming said foamable layer in said relatively foamable areas.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: January 12, 1999
    Assignee: Congoleum Corporation
    Inventors: Anthony N. Piacente, Milton J. Potosky
  • Patent number: 5853818
    Abstract: A method for fabricating a multi-domain liquid crystal cell is disclosed, wherein first and second alignment directions are formed in first and second portions of an alignment layer provided on a substrate by selectively subjecting the first and second portions to different energy doses of linearly polarized ultraviolet light. Liquid crystal material is then injected between the one substrate and another substrate and into contact with the alignment layer, thereby obtaining a wide viewing angle in the liquid crystal device.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: December 29, 1998
    Assignee: LG Electronics, Inc.
    Inventors: Soon Bum Kwon, Jong Hyun Kim, Oleg Yaroshchuk, Andrey Dyadyusha
  • Patent number: 5843521
    Abstract: A method for forming a magnetic transducer, and a magnetic transducer formed through the method. There is first provided a substrate. There is then formed over the substrate a first magnetic pole layer. There is then formed upon the first magnetic pole layer a gap filling dielectric layer. There is then formed upon the gap filling dielectric layer a seed layer. There is then formed upon the seed layer a photoresist frame employed in a photoresist frame plating method for forming a plated second magnetic pole layer upon the seed layer, where a base of a sidewall of the photoresist frame has a taper which provides a notch within an edge of the plated second magnetic pole layer at its interface with the seed layer.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: December 1, 1998
    Assignee: Headway Technologies, Inc.
    Inventors: Kochan Ju, Mao-Min Chen, Yimin Guo
  • Patent number: 5830533
    Abstract: A method of selectively fabricating metallization on a dielectric substrate is disclosed. A seed layer is sputtered on a polymer dielectric, a patterned photoresist mask is disposed over the seed layer, exposed portions of the seed layer are etched, the photoresist is stripped, and copper is deposited without a mask by electroless plating on the unetched seed layer to form well-adhering high density copper lines without exposing the photoresist to the electroless bath.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: November 3, 1998
    Assignee: Microelectronics and Computer Technology Corporation
    Inventors: Charles W. C. Lin, Randy L. German
  • Patent number: 5817204
    Abstract: A composite abrasive material is formed by coating a mesh-type material substrate with an adhesive, contacting the substrate with a quantity of hard, abrasive particles, then removing all particles not held by the adhesive within the openings of the mesh-type material. The particles are surrounded with a sinterable matrix material while the particles are temporarily held by the adhesive. The substrate can have the adhesive applied in a pattern, or covering uniformly to cause the particles to adhere in certain areas to achieve a desired pattern. While the particles are held on the substrate, physical force can be applied to orient the particles uniformly; then, a powder can be applied, or the substrate can be applied to a preform. Subsequent treatment with heat and pressure will complete the composite abrasive material.
    Type: Grant
    Filed: October 9, 1996
    Date of Patent: October 6, 1998
    Assignee: Ultimate Abrasive Systems, L.L.C.
    Inventor: Naum N. Tselesin
  • Patent number: 5817399
    Abstract: A method of manufacturing a two-color non-slip tread or flooring plate includes the steps of dimensioning the plate, cleaning the plate and applying a bonding agent to the plate. A uniform layer of plastisol of a light color, containing gritty particles such as aluminum oxide, is sprayed on one of the surfaces of the plate or tread. After partial curing by baking, a masking material is applied along one of the edges. This edge is selected to be the edge which would abut a discontinuity in the floor such as the edge of a step or a flooring area which is raised. A second layer of plastisol containing gritty particles with a darker pigment is then sprayed on to the first layer of plastisol. The plastisol layers are then cured by baking and the masking material is removed. The invention includes tread plates and flooring plates made in accordance with the method of the present invention.
    Type: Grant
    Filed: November 22, 1996
    Date of Patent: October 6, 1998
    Inventor: James H. Kalman
  • Patent number: 5804248
    Abstract: A multi-layer stencil is disclosed for applying solder paste to a printed circuit board. The stencil is formed from first and second layers of stencil material, e.g., stainless steel sheet, the second layer overlying the first layer in selected areas thereby forming a region of increased stencil thickness in those areas. A first plurality of apertures is defined through the thickness of the first layer only and a second plurality of apertures is defined through the combined thickness of the first and second layers in the selected regions. This type of multilevel stencil is useful for depositing differing thicknesses of solder paste onto a circuit board comprising a hybrid of through-hole and SMT devices.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: September 8, 1998
    Assignee: International Business Machines Corporation
    Inventor: Paul Hewett
  • Patent number: 5800856
    Abstract: A mask stencil (112) is made with at least one indicator line (204, 205) of material pre-removed from a wear surface (212) of the mask stencil, the depth of the line is approximately the amount of stencil mask material that can be worn from the wear surface of the mask stencil by a squeegee (110) without adversely affect an amount of solder paste (114) that accumulates on a printed circuit board substrate (116) through openings (201) in the mask stencil. In another embodiment, the mask stencil (112) is made with at least one indicator line (304, 305) of material pre-removed from a surface opposite (314) the wear surface (312). The amount of stencil mask material that remains above the indicator line is approximately equal to the amount of material that can be worn from the wear surface of the mask stencil by the squeegee without adversely affect an amount of solder paste that accumulates on the printed circuit board.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: September 1, 1998
    Assignee: Motorola, Inc.
    Inventor: Loan T. Hong Vuong
  • Patent number: 5795627
    Abstract: A method of forming an oxide enhancing region, such as phosphorus, in a semiconductor substrate with minimal damage is provided. The method includes the steps of forming an oxide enhancing region in the semiconductor substrate to a depth below the semiconductor substrate. A 308 nm excimer laser is then applied to the oxide enhancing region in order to reduce the damage caused by forming the oxide enhancing region. A uniform and reliable oxide layer is then formed on the surface of the substrate over the damage reduced oxide enhancing region.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: August 18, 1998
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Sunil Mehta, Emi Ishida, Xiao-Yu Li
  • Patent number: 5792520
    Abstract: A copper film layer and a resin film are sequentially layered on a skin material, the resin film is irradiated with a laser beam so as to be removed, a mask is formed on the copper film layer by use of the residual of the resin film, thereafter, an etching process is provided thereto, so that a copper film layer pattern is formed on the reflective surface of the skin material.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: August 11, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Akira Yamashita, Koichi Furukawa, Teruaki Orikasa, Noriaki Goto, Shigeki Matsunaka, Yoshitaka Kawada
  • Patent number: 5792511
    Abstract: A grid for producing a pattern on a surface. The grid includes elongated members connected together at intersections and extending about a plurality of open areas to form a mesh-like structure. Connecting members are connected to the elongated members at the intersections. The connecting members extend outwardly from at least one said elongated member. The connecting members have a thickness less than the thickness of the elongated members. The bottoms of the connecting members and bottoms of the elongated members are flush. The grid is placed on a surface and a liquid coating is spread over the surface in the open areas between the elongated members. The liquid coating is allowed to set. Preferably there is a removable coating on the grid which is removed after the liquid coating is set.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: August 11, 1998
    Assignee: IPC Techniques Inc.
    Inventors: Gerry Bill Oliver, Bruce Lorning Burton
  • Patent number: 5785840
    Abstract: The present invention relates to a process for producing a surface structure, preferably on a cylinder, cylinder dressing, or roller of a printing machine, with a hard chromium coating which is galvanically produced and preferably ground to dimensional accuracy. The object of the invention is to develop a process which permits a surface structure to be produced on the hard chromium coating, which surface structure permits relatively high frictional forces between the contact points of the printing material and the coating of the cylinder of the printing machine. This is achieved in that the surface structure is produced in two process steps in sequence, a surface part structure being produced as a dot screen in an approximately even random distribution by means of a first material erosion process in a first process step, and the final surface structure being produced in a second process step by means of a second material erosion including the dot screen.
    Type: Grant
    Filed: April 26, 1996
    Date of Patent: July 28, 1998
    Assignee: Man Roland Druckmaschinen AG
    Inventor: Werner Sondergeld
  • Patent number: 5779751
    Abstract: A method for making a fresnel lens on a substrate by forming a plurality of annular rings. Each ring has a plurality of steps, with each step having an inner wall and an outer wall, and an upper surface. The first step is formed on the substrate, and successive steps are formed at least partially on the upper surface of the previous step such that the outer wall of each successive annular step is offset from the outer wall of the previous annular step in an outward radial direction.
    Type: Grant
    Filed: March 14, 1997
    Date of Patent: July 14, 1998
    Assignee: Xerox Corporation
    Inventor: Kaiser H. Wong
  • Patent number: 5776537
    Abstract: An MR sensor includes an MR layer and permanent magnets defining an active area on the MR layer. A bi-layer test structure is fabricated with a permanent magnet layer deposited on a substrate and an MR layer deposited on the permanent magnet layer. If desired, a SAL may be deposited prior to deposition of the permanent magnet layer. A DC magnetic field is applied to the bi-layer test structure, and the strength of the DC magnetic field is varied. During application of the DC magnetic field, the magnetic response of the bi-layer test structure is measured to determine a hysteresis loop of the bi-layer structure. The exchange coupling between the permanent magnet layer and the MR layer is characterized by a point of inflection identified on the measured hysteresis loop.
    Type: Grant
    Filed: February 5, 1997
    Date of Patent: July 7, 1998
    Assignee: Seagate Technology, Inc.
    Inventors: Patrick J. Ryan, Zhijun Yang, Greg S. Mowry
  • Patent number: 5763002
    Abstract: Master disks for providing dies in particular for pressing optical disks, methods of manufacturing same, pressing dies obtained from such master disks and optical disks obtained from the latter and such pressing dies, the master disks consisting of a support carrying at its surface a succession of microcups representative of the information to be duplicated and consisting of a hard, conducting material reflecting in the near infrared range and selected from a zirconium, hafnium or titanium nitride or carbonitride, a hard ceramic reflecting in the near infrared range and conducting at the surface only and a hard glass reflecting in the near infrared range and conducting at the surface only.
    Type: Grant
    Filed: March 1, 1996
    Date of Patent: June 9, 1998
    Assignee: Digipress
    Inventors: Jean Ledieu, Jean-Francois Dufresne
  • Patent number: 5763016
    Abstract: Water-free, gaseous sulfur trioxide is used as an agent to form patterns in organic coatings, films, and layers, including photoresists, by etching areas exposed to the agent through an overlying mask or by developing a latent image of the desired pattern using the agent as a dry-developer.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: June 9, 1998
    Assignee: Anon, Incorporated
    Inventors: Eric O. Levenson, Ahmad Waleh
  • Patent number: 5756154
    Abstract: A method of masking surfaces during fabrication of semiconductor devices is disclosed, which includes providing a substrate, and in a preferred embodiment a silicon substrate. The surface is hydrogen terminated (or hydrogenated) and a metal mask is positioned on the surface so as to define a growth area and an unmasked portion on the surface. Ozone is generated at the surface, at least in the unmasked area, by exposing the surface to a light having a wavelength approximately 185 nm (an oxygen absorbing peak), so as to grow an oxide film on the unmasked portion of the surface. The metal mask is removed and the oxide film then serves as a mask for further operations and can be easily removed in situ by heating.
    Type: Grant
    Filed: January 5, 1996
    Date of Patent: May 26, 1998
    Assignee: Motorola, Inc.
    Inventors: Kumar Shiralagi, Raymond Tsui, Herbert Goronkin
  • Patent number: 5747117
    Abstract: A film is applied to a substrate in accordance with a predetermined pattern by applying a solution of a copolymer of fluoropolymers dissolved in a solvent onto the surface of the substrate; curing and annealing the solution to boil off the solvent and form a copolymer film on the substrate; depositing a thin metal film on the copolymer film; patterning the thin metal film by a photoresist etching process to expose the underlying copolymer film in accordance with the predetermined pattern; removing the exposed copolymer film so that the underlying substrate is exposed in accordance with the predetermined pattern; removing any remaining thin metal film; depositing the film to the remaining copolymer film and exposed substrate; then removing the remaining copolymer film and any film applied thereon by ultrasonic cleaning.
    Type: Grant
    Filed: June 4, 1997
    Date of Patent: May 5, 1998
    Assignee: Servo Corporation of America
    Inventor: Rand Dannenberg
  • Patent number: 5747094
    Abstract: Masking paper includes a black and white pattern formed thereon, preferably along at least one edge of the paper, with an area substantially adjacent a surface to be painted being masked using a patterned portion of the masking paper. The masking paper may include an adhesive on its back side, i.e, the side opposite the black and white pattern, at least on the portion of the back side generally opposite the patterned portion of the masking paper. Once properly masked, paint is applied to the surface to be painted with the painter running the paint pattern over a portion of the black and white pattern on the masking paper to gauge its coverage and/or color. If an additional check is desired, another portion of the pattern may be checked in the same manner.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: May 5, 1998
    Assignee: Fibre Glass-Evercoat Company, Inc.
    Inventor: Kimm A. Liddell
  • Patent number: 5741383
    Abstract: This invention relates to a process for bonding a vehicle window to a vehicle flange comprising the sequential steps of:a) applying a liquid masking composition to a vehicle flange,b) painting the vehicle, and drying or curing the liquid masking composition sufficiently to form a strippable mask;c) removing the mask from the flange; andd) adhesively bonding the vehicle window to the vehicle flange. Such a masking process advantageously eliminates the need for the use of solvent-based primers normally used to prime a painted vehicle flange, and provides a mask which is more easily applied and removed from the flange than masking means which initially comprise a solid substance.
    Type: Grant
    Filed: August 18, 1992
    Date of Patent: April 21, 1998
    Assignee: Essex Specialty Products, Inc.
    Inventor: Andrew R. Kneisel
  • Patent number: 5724720
    Abstract: A method of forming a button-type lithium electrode includes: a) masking an electrically conductive sheet with a material to which elemental lithium will not appreciably adhere to define a masked portion and an unmasked portion, the unmasked portion being in the shape of the desired electrode being formed; c) applying molten lithium to the masked sheet to cause elemental lithium to adhere to the unmasked portion but not appreciably adhere to the masked portion; alternately, directing a lithium stream onto the sheet; d) solidifying the lithium on the unmasked portion to in situ form a lithium electrode; and e) after solidifying, removing the masking material from the masked portion of the sheet.
    Type: Grant
    Filed: October 23, 1996
    Date of Patent: March 10, 1998
    Assignee: Micron Communications, Inc.
    Inventor: Mark E. Tuttle
  • Patent number: 5723403
    Abstract: A production process for supported catalysts is described comprising:(a) preparing a coating suspension containing at least one refractory inorganic oxide and at least some of the elements intended to constitute catalytically active phase (A);(b) filling at least part of the open porosity of a support with this suspension;(c) drying the filled support by centrifuging;(d) a thermal treatment of the support to obtain a support coated by a wash coat;(e) optionally impregnating the coated support with a solution containing the rest of, or elements of, catalytically active phase (A); and(f) thermally activating the catalyst.This preparation process is of particular interest in the production of catalysts for treating exhaust gases of internal combustion engines, where the wash coat deposited on a support comprises in particular a refractory inorganic oxide, iron oxide and cerium oxide and, by way of a catalytically active element, at least one noble metal such as platinum, rhodium or palladium.
    Type: Grant
    Filed: July 29, 1994
    Date of Patent: March 3, 1998
    Assignee: Institut Francais Du Petrole
    Inventors: Daniel Durand, Gil Mabilon, Isabelle Guibard
  • Patent number: 5723180
    Abstract: A method for applying a coating of a corrosion resistant material to an individual vehicle frame component or to an assembled vehicle frame structure includes the initial step of heating the vehicle frame component to a predetermined temperature, such as by passing it through a furnace. Then, a coating of a first corrosion resistant material, such as wax, is applied to the vehicle frame. Preferably, the coating of the first wax is applied to the vehicle frame structure by dipping it in a hot bath of the first wax material. The vehicle frame structure is then removed from the bath, and heat is maintained thereon to allow excess first wax to drip off. A coating of a second corrosion resistant material, such as wax, is then applied at localized areas of the vehicle frame structure in place of the first wax coating. The first wax can be removed by any suitable method, such as by scraping, dissolving, or masking the localized area of the vehicle frame structure.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: March 3, 1998
    Assignee: Dana Corporation
    Inventor: Peter D. Boulanger
  • Patent number: 5721008
    Abstract: A method of fabricating a dual magnetoresistive (DMR) sensor with improved sensor-to-sensor match is disclosed. A first Mo conductor layer and a first NiMn antiferromagnetic layer are formed on top of a first gap layer in wing regions of the DMR sensor. The first NiMn layer is formed on top of the first Mo layer. A first NiFe sensor layer, a first spacer layer and a second NiFe sensor layer are deposited on top of the first NiMn layer in the wing regions and on top of the first gap layer in the active region. The first NiFe sensor layer, the first spacer layer and the second NiFe sensor layer are all deposited in a single vacuum deposition run to minimize material mismatches, and are simultaneously patterned to the desired geometry to minimize misalignment between the two sensor layers. A second conductor layer and a second antiferromagnetic layer are formed on top the second NiFe sensor layer in the wing regions.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: February 24, 1998
    Assignee: Seagate Technology, Inc.
    Inventors: Fujian Huang, James Giusti, Gregory S. Mowry
  • Patent number: RE36711
    Abstract: A light influencing element and the process of fabricating the same is disclosed, wherein the light influencing element is fabricated by disposing a layer of a substantially opaque material upon a transparent substrate. One or more openings or wells may then be cut or formed in the surface of the layer of opaque material. Into such openings a light influencing material is then disposed, preferable said materials are injected thereinto as by ink-jet type injection heads. Liquid crystal displays and subassemblies formed upon the light influencing elements of the instant invention are also provided.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: May 23, 2000
    Assignee: LG Electronics Inc.
    Inventor: Zvi Yaniv