Modified Condition Of Atmosphere (e.g., Steam, Air Movement, Etc.) Patents (Class 427/377)
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Patent number: 5741545Abstract: Organic substrate surfaces, particularly of industrial polymers, are provided by fluorination or chlorination with corresponding layers so as to obtain certain properties; for the purpose of improving the application of a layer, the surfaces are exposed beforehand at temperatures between 25.degree. C. and 300.degree. C. to hydrogen or a gas containing at least 0.1% by volume of hydrogen.Type: GrantFiled: April 22, 1996Date of Patent: April 21, 1998Assignee: Messer Griesheim GmbHInventors: Manfred Eschwey, Rolf van Bonn, Ludwig Bohm, Rainer Kaps, Eckard Raddatz
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Patent number: 5736189Abstract: A method and apparatus for forming a phosphor layer of a projection CCRT utilizes a sedimentation, in which phosphor particles forming a suspension are consistently precipitated and dried over the inner surface of a panel regardless of the particle sizes resulting in decreased porosity of the phosphor layer to improve brightness and resolution while reducing a working manufacturing time.Type: GrantFiled: September 18, 1995Date of Patent: April 7, 1998Assignee: LG Electronics Inc.Inventor: Hyo Dae Bae
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Patent number: 5733685Abstract: A method of treating lithium manganese oxide of spinel structure is disclosed. The method involves heating the lithium manganese oxide spinel in an atmosphere of an inert gas which does not react with the spinel. Such gases may be selected advantageously from argon, helium, nitrogen, and carbon dioxide. Preferred nonreacting gases which may be employed for spinel treatment are nitrogen or carbon dioxide. The spinel is advantageously treated with such gases at elevated temperatures. Alternatively, the spinel may be first coated with a hydroxide, preferably lithium, sodium or potassium hydroxide and then heated in an atmosphere of carbon dioxide gas at elevated temperatures. Such treatment of lithium manganese oxide spinel has been determined to improve the performance of the spinel when employed as an electrode in rechargeable cells such as lithium-ion cells.Type: GrantFiled: July 12, 1996Date of Patent: March 31, 1998Assignee: Duracell Inc.Inventor: Enoch I. Wang
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Patent number: 5723361Abstract: A method for fabricating an integrate circuit capacitor having a dielectric layer comprising BST with excess A-site and B-site materials such as barium and titanium added. An organometallic or metallic soap precursor solution is prepared comprising a stock solution of BST of greater than 99.999% purity blended with excess A-site and B-site materials such as barium and titanium such that the barium is in the range of 0.01-100 mol %, and such that the titanium is in the range of 0.01-100 mol %. A xylene exchange is then performed to adjust the viscosity of the solution for spin-on application to a substrate. The precursor solution is spun on a first electrode, dried at 400.degree. C. for 2 to 10 minutes, then annealed at 650.degree. C. to 800.degree. C. for about an hour to form a layer of BST with excess titanium. A second electrode is deposited, patterned, and annealed at between 650.degree. C. to 800.degree. C. for about 30 minutes.Type: GrantFiled: July 5, 1994Date of Patent: March 3, 1998Assignees: Symetrix Corporation, Matsushita Electronics CorporationInventors: Masamichi Azuma, Carlos A. Paz De Araujo, Michael C. Scott
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Patent number: 5716677Abstract: The service life of fiber-reinforced polyimide composites in a high temperature oxidative environment is extended by coating with a polyimide coating precursor solution that is synthesized by reacting an aromatic dianhydride with an aromatic diamine in a non-reactive solvent. The reactive solution is heated to a temperature sufficent to reduce its viscosity prior to its use as a coating. Preferably, a mixture of meta-phenylenediamine and para-phenylenediamine is reacted with biphenyldianhydride in n-methyl pyrrolidinone solvent and thereafter heated to between about 50.degree. C. (122.degree. F.) and 150.degree. C. (302.degree. F.) under nitrogen while stirring for a time sufficient to obtain a polyamic acid polyimide precursor coating solution having a Brookfield viscosity of from about 500 to about 5000 cP and a solids content of from about 5 to about 35 weight percent.Type: GrantFiled: March 21, 1996Date of Patent: February 10, 1998Assignee: Ohio Aerospace InstituteInventors: Anthony M. Mazany, Stanley G. Prybyla
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Patent number: 5714203Abstract: The invention relates to a procedure applicable for drying substrate surfaces of a large number of materials, such as semiconductors, metals, plastics and, in particular, silicon. The silicon (1) is dipped into a liquid bath (2) and the silicon (1) is separated from the liquid (3), the liquid of the bath (2) consisting of an aqueous HF solution (3) with a concentration between 0.001 and 50%. By adding a gas mixture containing O.sub.2 /O.sub.3 immediately after the drying process is finished, the silicon surface is hydrophilized. By adding a gas mixture containing O.sub.2 /O.sub.3 during the drying process, cleaning takes place as the ozone enters the solution on the liquid surface.Type: GrantFiled: August 5, 1996Date of Patent: February 3, 1998Assignee: Ictop Entwicklungs GmbHInventors: Wilhelm Schellenberger, Dieter Herrmannsdorfer
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Patent number: 5707683Abstract: Disclosed are coating compositions which include a preceramic silicon-containing material dissolved in short chain linear siloxanes. The compositions have a long shelf life and are useful for forming coatings which are thick and of good quality.Type: GrantFiled: February 22, 1996Date of Patent: January 13, 1998Assignee: Dow Corning CorporationInventors: Alexander Brian Currie, Cathryn Marie Haines, Michael Dean Little, Keith Winton Michael, Kristen Andrea Scheibert
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Patent number: 5702766Abstract: A method for preparing a ceramic composite having a core/bulk of tetragonal zirconia alloy and a shell/surface comprising zirconium boride by sintering a zirconia or zirconia and alumina composite article in an argon atmosphere while in contact with boron carbide.Type: GrantFiled: December 20, 1996Date of Patent: December 30, 1997Assignee: Eastman Kodak CompanyInventors: Gregory S. Jarrold, Dilip K. Chatterjee, Syamal K. Ghosh
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Patent number: 5698266Abstract: The present invention relates to a process for the production of thin coatings having optical and abrasion resistance properties.The object of the invention is to produce optical thin coatings having good mechanical strength characteristics, i.e. a good resistance to abrasion and an adequate adhesion to the substrate on which they are deposited.This object is achieved with the aid of a process comprising at least one cycle constituted by stages consisting of:applying to a substrate (1) at least one antireflection sol-gel coating (3) constituted by a colloidal silicon oxide suspension dispersed in an aliphatic alcohol,allowing said antireflection coating (3) to dry,subjecting the substrate (1) covered with said colloidal silica coating (3) to an alkaline treatment in a liquid or gaseous medium.Type: GrantFiled: March 25, 1997Date of Patent: December 16, 1997Assignee: Commissariat a l'Energie AtomiqueInventors: Herve Floch, Philippe Belleville
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Patent number: 5691048Abstract: Article of manufacture and method of making the same in which a metal substrate has an undercoating is made from a combination of at least one pulverulent metal and a transition metal compound and a coating thereon containing an autodeposited resin formed under autodepositing conditions.Type: GrantFiled: January 22, 1996Date of Patent: November 25, 1997Assignee: Henkel CorporationInventors: Oscar E. Roberto, Marc A. Maxim
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Patent number: 5688558Abstract: The textile support for thermo-bonding interlining according to the invention is constituted by a weft knit, composed exclusively of yarns of biodegradable cellulosic matter, particularly viscose, the warp being exclusively of continuous multi-filament yarns.The support was preferably subjected, prior to the application of the thermo-fusible polymer spots, to a treatment of mechanical compacting by passage between a heated cylinder and a compression belt, the temperature of the cylinder being at the most 130.degree. C.The thermo-bonding interlining, comprising the textile support mentioned above, after application of the spots of thermo-fusible polymer, was advantageously subjected to a second treatment of mechanical compacting, similar to the first, the cylinder being heated only to a temperature less than 80.degree. C.Type: GrantFiled: March 28, 1996Date of Patent: November 18, 1997Assignee: Lainiere de Picardie S.A.Inventor: Pierre Groshens
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Patent number: 5681610Abstract: An apparatus and method for applying a coating to glass including a support surface for supporting a glass pane, a print screen having a screen support frame defining a perimeter of the print screen disposed above the support surface to apply a coating over the print screen. The print screen is deflected into contact with the glass pane at predetermined points thereon and the coating is moved over the print screen to deposit the coating on the predetermined points on the glass pane when the print screen is so deflected. The apparatus also includes a vapor manifold having a predetermined width disposed within the perimeter defined by the screen support frame and coupled to a source of vapor. The vapor manifold distributes a vapor blanket over the print screen and the glass pane, thereby reducing the rate at which the coating on the glass pane dries and impede evaporation of the coating from the print screen.Type: GrantFiled: December 15, 1995Date of Patent: October 28, 1997Assignee: Ford Motor CompanyInventor: Premakaran Tucker Boaz
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Patent number: 5679411Abstract: In a method for producing corrosion and wear resistant coatings on iron material, in which subsurface areas are enriched with nitrogen, carbon, and oxygen, the iron material is nitrocarburized for forming a connective coating of carbonitride. The surface of the iron material is activated with a plasma-supported vacuum process. The ion material is subsequently oxidized to form a continuous oxide coating.Type: GrantFiled: July 11, 1996Date of Patent: October 21, 1997Assignee: Metaplas Ionon Oberflachenveredelungstechnik GmbHInventor: Steffen Hoppe
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Patent number: 5674557Abstract: Hydrophilic contact lens molds are transiently modified to provide a water dynamic contact angle equal to or less than 100.degree. by treatment with a wetting agent which may be water or a surfactant composition which provides a mold surface having a water wetting force of at least 70 mg to afford a reduction in lens hole defects in hydrophilic contact lens manufacture.Type: GrantFiled: September 29, 1995Date of Patent: October 7, 1997Assignee: Johnson & Johnson Vision Products, Inc.Inventors: Michael Widman, James Jen, John Enns, Mehmet Burduroglu
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Patent number: 5670211Abstract: A method of applying a two-part liquid composition to a workpiece is provided. In particular, a two-step method is provided wherein a first liquid composition is applied to the workpiece by roll coating, and a second liquid composition is applied by spraying the workpiece. Generally, the first liquid composition is a polyurethane adhesive and the second liquid composition is a polyurethane catalyst. By applying the reactive components of the polyurethane composition in two steps, the open time may be controlled.Type: GrantFiled: September 14, 1995Date of Patent: September 23, 1997Assignee: Hoover Universal, Inc.Inventors: Kenneth G. Huber, Richard P. Doerer, Normand R. Marceau
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Patent number: 5665433Abstract: A method for improving physical characteristics of cured container coatings subjected to steam processing is described herein. The method comprises applying a coating composition including a first component which is a carbamate functional compound and a second component which is a compound having a plurality of functional groups that are reactive with said carbamate group(s) on the carbamate functional compound. The coating composition is baked to form a cured film on the container. The container is filled and subjected to steam processing conditions suitable for food and beverage processing.Type: GrantFiled: December 20, 1995Date of Patent: September 9, 1997Assignee: BASF CorporationInventors: Youssef Moussa, Kareem K. Kaleem
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Patent number: 5660873Abstract: A method is provided for forming fibrin coatings on a substrate, such as device for implantation in a body. The fibrin coatings are dried to provide a fibrin coating having the ability to be stored for extended periods before use. To provide coatings having high shear force resistance, the substrate is contacted first with thrombin and second with fibrinogen.Type: GrantFiled: September 9, 1994Date of Patent: August 26, 1997Assignee: Bioseal, Limited Liability CorporatonInventors: Victor Nikolaychik, Nicholas N. Kipshidze, John E. Baker
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Patent number: 5660885Abstract: A method for protecting thermal barrier coatings deposited on engine parts from the deleterious effects of environmental contaminants at high temperatures is given. The method uses a sacrificially consumed oxide coating with the thermal barrier coating, where the consumption of the oxide coating increases the melting temperature of a contaminant composition above the surface temperature of the thermal barrier coating, or increases the viscosity of the contaminant composition to prevent its infiltration into the thermal barrier coating.Type: GrantFiled: April 3, 1995Date of Patent: August 26, 1997Assignee: General Electric CompanyInventors: Wayne Charles Hasz, Curtis Alan Johnson, Marcus Preston Borom
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Patent number: 5658612Abstract: A method for making a tantala/silica interference filter on the surface of a tungsten-halogen incandescent lamp having molybdenum leads includes depositing on the lamp surface by low pressure chemical vapor deposition the interference filter comprising alternating layers of tantala and silica. Thereafter, the filter is heat treated in an atmosphere of humidified inert gas containing less than 1% oxygen.Type: GrantFiled: September 29, 1995Date of Patent: August 19, 1997Assignee: Osram Sylvania Inc.Inventors: Hongwen Li, Keith A. Klinedinst
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Patent number: 5648115Abstract: A method for making a tantala/silica interference filter on a vitreous substrate, the filter retaining integrity at temperatures in excess of 600.degree. C., includes the steps of applying to the vitreous substrate a first coating of vitreous silica doped with submicron-sized particles, depositing on the first coating by low pressure chemical vapor deposition the filter which comprises a second coating comprising alternating layers of tantala and silica, and heat treating the substrate and first and second coatings to bond the filter to the substrate. There is further provided an electric lamp having an envelope made in accordance with the above method.Type: GrantFiled: August 23, 1995Date of Patent: July 15, 1997Assignee: Osram Sylvania Inc.Inventors: Gautam Bandyopadhyay, Keith A. Klinedinst, Silvia E. Lichtensteiger
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Patent number: 5645898Abstract: The present invention may provide a method for manufacturing a magnetic recording medium with high reliability by rendering simply a surface of a magnetic recording medium rough. A recording film of a magnetic material is formed on a nonmagnetic substrate, then a multilayered or composite protection film including first and second materials is formed on the recording film, and then selectively etching one of said first and second materials to transform a surface of the recording film into a rough surface.Type: GrantFiled: January 22, 1996Date of Patent: July 8, 1997Assignee: Fujitsu LimitedInventors: Kenji Sato, Iwao Okamoto, Chiaki Okuyama
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Patent number: 5637195Abstract: This invention relates to a method for reducing off-taste and/or odor from hygienic paper packages (such as food and beverage packaging) by heating and steam stripping the surface of the paper web. Such methods of this type, generally, remove undesirable compounds that create off-taste and/or odor from the paper package in a simple, cost-effective manner.Type: GrantFiled: March 23, 1995Date of Patent: June 10, 1997Assignee: Westvaco CorporationInventor: James J. Foster
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Patent number: 5635240Abstract: The present invention relates to a method of forming coatings on electronic substrates and the substrates coated thereby. The method comprises applying a coating comprising hydrogen silsesquioxane resin and a polysilazane on a substrate and heating the coated substrate at a temperature sufficient to convert the resins to ceramics.Type: GrantFiled: June 19, 1995Date of Patent: June 3, 1997Assignee: Dow Corning CorporationInventors: Loren A. Haluska, Keith W. Michael
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Patent number: 5633040Abstract: A film treating method treats a resist film which is formed on a substrate by spin coating. The method comprises a step for coating resist on the substrate to form the resist film, a step for conveying the substrate to a region having an atmosphere of a saturated vapor or a super-saturated vapor of solvent before the solvent contained in the resist film is lost, a step for executing a first heating process wherein the substrate is heated at a temperature which lowers the viscosity of the resist film and permits solvent to remain in the resist film in an amount sufficient to maintain the fluidity of the resist film, a step for conveying the substrate away from the region having the atmosphere of the saturated vapor or the super-saturated vapor of solvent, and a step for executing a second heating process wherein the substrate is heated at a temperature higher than that of the first heating process, thereby permitting the solvent to evaporate from the resist film.Type: GrantFiled: May 20, 1994Date of Patent: May 27, 1997Assignee: Tokyo Electron LimitedInventors: Takayuki Toshima, Tohru Aoyama
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Patent number: 5626914Abstract: A method for fabricating ceramic-metal composites having continuous ceramic and metallic phases. In one embodiment, the metal phase includes copper metal. The method can include the steps of contacting a porous ceramic matrix material with molten metal whereby capillary action pulls the metal into the ceramic matrix to substantially fill the open void space. The present invention also provides a ceramic-metal composite having continuous metal and ceramic phases.Type: GrantFiled: March 31, 1994Date of Patent: May 6, 1997Assignee: Coors Ceramics CompanyInventors: Marcus A. Ritland, Dennis W. Readey
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Patent number: 5614251Abstract: Proposed is a liquid coating composition for the formation of a siliceous coating film having good storage stability against gelation for the protection, levelling or electric insulation of various substrate surfaces. The composition is a uniform solution comprising:(A) a partial cohydrolysis-cocondensation product of(a) a first hydrolyzable silane compound represented by the general formulaHSi(OR).sub.3,in which each R is, independently from the others, an alkyl group having 1 to 4 carbon atoms or a phenyl group, and(b) a second hydrolyzable silane compound represented by the general formul aSi(OR).sub.4,in which each R has the same meaning as defined above,in a molar ratio of (a):(b) in the range from 1:9 to 9:1; and (B) an organic solvent to dissolve the component (A). The storage stability of the coating composition can be improved by removing the alcohol contained therein as the hydrolysis product of the silane compounds to such a content as not to exceed 15% by weight.Type: GrantFiled: November 29, 1995Date of Patent: March 25, 1997Assignee: Tokyo Ohka Kogyo Co., Ltd.Inventors: Yoshinori Sakamoto, Yoshio Hagiwara, Hatsuyuki Tanaka, Toshimasa Nakayama
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Patent number: 5612090Abstract: An iron-based heat-generating material excellent in oxidation resistance at an elevated temperature which comprises an iron-based alloy capable of generating heat by passing electricity therethrough and a coating of aluminum and oxygen formed on the surface of the alloy, the amount of the oxygen in the coating is less than the stoichiometric amount of oxygen in Al.sub.2 O.sub.3. The material can be prepared by vacuum evaporation of Al onto the surface of the iron-based alloy wherein an oxygen partial pressure in a vacuum gaseous atmosphere for the vacuum evaporation is adjusted so that there is formed on the surface of the alloy a coating consisting of aluminum and oxygen, the amount of the oxygen in the coating being less than the stoichiometric amount of oxygen in Al.sub.2 O.sub.3. When the material is heated in ambient or oxidizing atmosphere, an outermost layer of the coating is rapidly converted to Al.sub.2 O.sub.3.Type: GrantFiled: June 6, 1995Date of Patent: March 18, 1997Assignee: Nisshin Steel Co., Ltd.Inventors: Yasushi Fukui, Atsushi Ando, Yoshikazu Morita, Masanori Matsuno, Minoru Saito, Hideo Miyake, Masahiko Souda
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Patent number: 5612085Abstract: Provided is a method for making a thin film on a lens holder to reduce a reflection of light caused by an index difference between a refractive index of air and a refractive index of a lens-barrel of the lens holder. The thin film is formed by dipping the lens holder into a solution of a solvent and a fluororesin compound or by dripping the solution onto the lens holder. The lens holder is removed from the solution. Then, the solvent is removed to thereby form a thin film of the fluororesin compound on the lens holder.Type: GrantFiled: April 4, 1994Date of Patent: March 18, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuaki Mitani, Masayuki Takahashi, Syunsuke Kimura
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Patent number: 5612087Abstract: A fibrous electrically-conductive filler herein provided comprises fibrous aluminum borate as a core material provided thereon with, in order, an optional titanium oxide intermediate layer and an antimony-free tin oxide layer. The fibrous electrically-conductive filler can be prepared by a method which comprises the steps of optionally forming an intermediate layer of titanium oxide by depositing titanium oxide hydrate on the surface of the core material and then calcining the titanium oxide hydrate layer; then forming a coating layer of tin oxide hydrate on the surface of the titanium oxide-coated fibrous aluminum borate or the fibrous aluminum borate as a core material and then calcining the coating layer at a temperature ranging from 150.degree. to 600.degree. C. in an inert gas atmosphere or a reducing atmosphere to form an antimony-free tin oxide layer.Type: GrantFiled: November 30, 1995Date of Patent: March 18, 1997Assignee: Mitsui Mining & Smelting Co., Ltd.Inventors: Takao Hayashi, Nobuyoshi Kasahara, Norihiro Sato, Kouichi Kawaratani
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Patent number: 5603983Abstract: Processes for coating substrates, in particular substrates including shielded surfaces, with transition metal oxide-containing coatings are disclosed. Such processes comprise contacting a substrate with a transition metal oxide precursor, preferably maintaining the precursor coated substrate at conditions to equilibrate the coating, and then oxidizing the precursor to form a substrate containing transition metal oxide. Also disclosed are substrates coated with transition metal oxide-containing coatings for use in various applications.Type: GrantFiled: March 2, 1995Date of Patent: February 18, 1997Assignee: Ensci IncInventors: Thomas J. Clough, Victor L. Grosvenor, Naum Pinsky
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Patent number: 5597614Abstract: A particle dispersed glassy material includes ultrafine metal particles that are present in a high concentration. The particles are surrounded by a fixation component and, optionally, can be surrounded by a skeleton forming component. The glassy material is produced by firing a substrate having a film thereon that includes a polymer composite having the ultrafine particles uniformly dispersed therein, a fixation reagent and, optionally, a skeleton forming reagent under relatively mild conditions that do not damage the substrate. A method of making the glassy material includes the steps of making a film-forming composition that includes the polymer composite, the fixation reagent and, optionally, the skeleton forming reagent, applying the composition to a substrate, drying the applied composition to produce a film and firing the film to produce the glassy material.Type: GrantFiled: June 7, 1995Date of Patent: January 28, 1997Assignee: Mitsuboshi Belting Ltd.Inventors: Toru Noguchi, Kazuo Goto, Sigehiko Hayashi, Masahito Kawahara, Susumu Murakami, Yoshio Yamaguchi, Shigehito Deki
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Patent number: 5591294Abstract: In a method of manufacturing and storing a recording sheet, a coating solution is coated on at least one surface of a base member and dried and a resulting recording sheet is cut and enclosed in a packaging material. The process from drying to enclosing is carried out in an atmosphere having a humidity not exceeding 50% RH.Type: GrantFiled: July 12, 1994Date of Patent: January 7, 1997Assignee: Canon Kabushiki KaishaInventors: Mamoru Sakaki, Miyuki Fujita, Yasuyuki Ishii
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Patent number: 5585141Abstract: Cast iron pipe and other elongated hollow articles are lined with a cementitious mortar for certain applications, such as the transmission of potable water or sewage. To improve the resistance to attack from acids and to provide a crack and void spot free cement lining, a calcium alumina cement is used to line the article. A plasticizer such as fireclay is added to the calcium alumina cement prior to its application. The cement lined article is then coated with an asphaltic based coating and then cured in a high humidity environment.Type: GrantFiled: July 1, 1994Date of Patent: December 17, 1996Assignee: Amsted Industries IncorporatedInventors: C. Gilmer Loving, Steven Farkas
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Patent number: 5571560Abstract: A minimal amount of waste in liquid resist material is achieved by dispensing through small openings at close proximity to the substrate. An airtight substrate chamber as well as airtight sealing of dispensing assembly and airtight sealing of the space that does not have to be opened for substrate loading and unloading, are used to facilitate a uniform and planarized coating after a high-speed spin off of excess resist.Type: GrantFiled: January 12, 1994Date of Patent: November 5, 1996Inventor: Burn J. Lin
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Patent number: 5558901Abstract: A process for manufacturing a continuous dental floss brush comprising alternating portions of thread sections which do not stretch significantly under tension and brush sections which stretch under slight tension, includes the step of coating at least the thread sections of a reverse twisted high tenacity nylon yarn with a solution of polymer in a volatile solvent, the polymer being selected from nylon, polyurethane and mixtures thereof. The thread sections of the yarn are thereafter heated to vaporize solvent therefrom while the yarn is maintained under a tension of from 0.15 to 1N. In the humidifier assembly, having a housing which defines a humidifier zone, the brush sections of the yarn are exposed to a mixture of steam and gas, the steam and gas mixture having a temperature of from 130.degree. C.Type: GrantFiled: May 26, 1994Date of Patent: September 24, 1996Assignee: Gillette Canada, Inc.Inventors: Sean G. Gilligan, Dermot T. Freeman, Larry J. Oliphant, Jeffrey S. Messmann, Patrick J. Hanley, Gerald S. Szczech
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Patent number: 5558908Abstract: The present invention is directed to compositions derived from polymers containing metal-nitrogen bonds, which compositions exhibit, among other things, desirable oxidation resistance, corrosion resistance and hydrolytic stability when exposed to adverse environments, whether at ambient or at elevated temperatures, and which may be useful as, for example, protective coatings on surfaces.Type: GrantFiled: November 7, 1994Date of Patent: September 24, 1996Assignee: Lanxide Technology Company, LPInventors: Alexander Lukacs III, James A. Jensen, Kurt J. Becker
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Patent number: 5547704Abstract: A flexible magnetic disk has a first magnetic layer formed on a first surface of a circular polymeric substrate by coating and drying a magnetic coating material. After the first magnetic layer is formed and dried, a second magnetic layer is formed on a second surface of the polymeric substrate by coating and drying the magnetic coating material. The second magnetic layer formed on the second surface is then calendered to form a magnetic recording surface. The resulting magnetic disk provides for an improved surface vibration during high-speed rotation of the disk, and provides very good head touch.Type: GrantFiled: September 6, 1994Date of Patent: August 20, 1996Assignee: Fuji Photo Film Co., Ltd.Inventors: Yasuo Nagashima, Ryuji Shirahata
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Patent number: 5547703Abstract: Disclosed is a method for forming improved Si-O containing coatings on electronic substrates. The method comprises heating a hydrogen silsesquioxane resin successively under wet ammonia, dry ammonia and oxygen. The resultant coatings have improved properties such as low dielectric constants.Type: GrantFiled: April 11, 1994Date of Patent: August 20, 1996Assignee: Dow Corning CorporationInventors: Robert C. Camilletti, Fredric C. Dall, Diana K. Dunn
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Patent number: 5547706Abstract: Optical thin films are produced on a substrate by alternate chemical vapor deposition of two metal oxides having different indices of refraction. Said oxides are prepared from reactants capable of decomposing to form only volatile by-products, typically alkoxides. The preferred oxides are titania and spinel.Type: GrantFiled: July 27, 1994Date of Patent: August 20, 1996Assignee: General Electric CompanyInventor: John F. Ackerman
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Patent number: 5536535Abstract: A process for producing coated paper comprises applying an aqueous coating solution onto coating base paper and drying the coating base paper, wherein a steam provided for drying or gas composed mainly of a steam is brought into direct contact with paper sheet, heated for regeneration, and then circulation for re-use, in which owing to the improvements in the heat efficiency and drying rate in the drying step, not only the productivity is improved, but also a high-quality coated paper is stably produced with a good efficiency.Type: GrantFiled: March 8, 1995Date of Patent: July 16, 1996Assignee: Nippon Paper Industries Co., Ltd.Inventors: Yoichi Yamazaki, Hirotoshi Aikawa, Kazuaki Kamata, Yasunori Nanri
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Patent number: 5534293Abstract: A method for treating surfaces of carbon based materials produces a layer of hafnium carbide with no significant change of the location of the surface or the dimension of the part being treated. A slurry containing elemental hafnium is applied to this surface. The surface is heat treated in a vacuum furnace, causing the hafnium in the slurry to form an HfC layer within the material, and remove all other slurry materials from the surface. In a variation of the method, the slurry may also contain silicon and chromium to catalyze the reaction. The treated surface exhibits improved properties for components of high temperature gas flow handling systems. The method is useful for valves and ducts having complex internal surface geometries.Type: GrantFiled: September 23, 1994Date of Patent: July 9, 1996Assignee: Loral Aerospace Corp.Inventor: Bradley D. Wisneskie
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Patent number: 5534312Abstract: A photoresist-free method for making patterned films of metal oxides, metals, or other metal containing compounds is described. The method involves applying an amorphous film of a metal complex to a substrate. The film may be conveniently applied by spin coating using standard industry techniques. The metal complex used is photoreactive and undergoes a low temperature chemical reaction in the presence of light of a suitable wavelength. The end product of the reactions depends upon the atmosphere in which the reactions take place. Metal oxide films may be made in air. Patterned films may be made by exposing only selected portions of the film to light. Patterns of two or more materials may be laid down from the same film by exposing different parts of the film to light in different atmospheres. The resulting patterned film is generally planar. Separate planarization steps are not generally required.Type: GrantFiled: November 14, 1994Date of Patent: July 9, 1996Assignee: Simon Fraser UniversityInventors: Ross H. Hill, Bentley J. Palmer, Alfred A. Avey, Jr., Sharon L. Blair, Chu-Hui W. Chu, Meihua Gao, Wai L. Law
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Patent number: 5534301Abstract: A method for producing fire-resistant cellulose insulation materials using liquid fire retardants. Cellulose materials (e.g. paper) are initially shredded into multiple pieces which are sprayed with a mist containing liquid fire retardants. The sprayed paper is then subjected to a delay period before further processing to ensure diffusion of the fire retardants into the paper. The paper is then passed into a drying chamber in combination with a stream of heated air. The air is preferably introduced into the chamber in a non-parallel, angular flow path relative to the longitudinal axis of the chamber. To completely dry the paper, movement of the paper and heated air through the chamber is periodically interrupted so that the paper is completely dried by the air. Interruption may be achieved by providing moving baffle members within the chamber. As a result, a dried cellulose insulation product is manufactured.Type: GrantFiled: May 10, 1995Date of Patent: July 9, 1996Assignee: Echochem International, Inc.Inventor: Thomas C. Shutt
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Patent number: 5523163Abstract: Disclosed are Si--O containing ceramics having a dielectric constant less than or equal to about 3.2 which is stable over time. These properties render the ceramics valuable on electronic substrates.Type: GrantFiled: March 10, 1995Date of Patent: June 4, 1996Assignee: Dow Corning CorporationInventors: David S. Ballance, Robert C. Camilletti, Diana K. Dunn
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Patent number: 5518761Abstract: An absorbent material is provided which enjoys suppleness, possesses highly satisfactory absorption qualities (speed of absorption and capacity for absorption), allows section into pieces of desired size and shape, and excels in safety.An absorbent material comprising 100 parts by weight of absorbent resin particles and 15 to 150 parts by weight of water, which absorbent material is in the form of a sheet having a thickness in the approximate range of 0.3 to 5 mm, the form of a sheet resulting from mutual adhesion of the absorbent resin particles.Type: GrantFiled: June 5, 1995Date of Patent: May 21, 1996Assignee: Nippon Shokubai Co., Ltd.Inventors: Takumi Hatsuda, Kazumasa Konishi
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Patent number: 5514501Abstract: A process for creating a two dimensional spacial distribution pattern of ferent thiolate molecules on a substrate by illuminating a surface of a self-assembled monolayer of a first thiolate compound in the presence of oxygen with high frequency electromagnetic radiation distributed according to a desired pattern, and subsequently immersing the illuminated substrate in a solution of a second thiolate compound so that molecules of the first thiolate compound in illuminated areas of the monolayer are exchanged for molecules of said second thiolate compound; and a patterned biomolecular composite formed of a substrate which forms a self-assembled thiolate monolayer when immersed in a solution of a thiolate forming compound, a thiolate monolayer deposited on the substrate and composed of patterned areas of first and second thiolate compounds, respectively, the first thiolate compound having an affinity for specifically or nonspecifically adsorbing a biological molecule, and the second thiolate compound having esseType: GrantFiled: June 7, 1994Date of Patent: May 7, 1996Assignee: The United States of America as represented by the Secretary of CommerceInventor: Michael J. Tarlov
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Patent number: 5514413Abstract: A process is provided for fabricating composite membranes by coating a porous substrate with a solution of selective polymer. A reserve of non-solvent medium is incorporated in the substrate pore network which allows the substrate to be successfully coated with a polymer solution formulated in a solvent medium which is also a solvent for the substrate material.Type: GrantFiled: March 31, 1994Date of Patent: May 7, 1996Assignee: Air Products and Chemicals, Inc.Inventors: Jacob A. Van't Hof, Pushpinder S. Puri, Stephen C. Lynch, Albert A. Brooks, Daniel T. Diggs
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Patent number: 5510142Abstract: The invention concerns a process for manufacturing a composite base fabric intended for the reinforcement of a waistband which is elastic in the direction of the warp, characterized in that it comprises the steps of using a warp knitting machine with weft inserts to produce a composite base fabric comprising a warp knit fabric, a fabric substrate inserted in the warp knit fabric, elastic yarns which undergo a tensional elastic deformation during the knitting, weft yarns; thermofixing the composite base fabric thus obtained; depositing a film forming coating comprising a cross-linkable resin on the face of the fabric substrate in contact with the elastic yarns and the weft yarns; drying and cross-linking the film forming coating; submitting the composite base fabric to a relaxation treatmentType: GrantFiled: September 15, 1994Date of Patent: April 23, 1996Assignee: Lainiere de PicardieInventor: Pierrot Groshens
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Patent number: 5501878Abstract: A process for reducing the carbonization of the heat exchange surfaces in a tubular heat exchanger of boiler steel which, in particular, within a unit for the thermal cracking of hydrocarbons to alkenes and while producing steam, carries out the rapid cooling of the cracking products after they leave the cracking furnace. After the tubular heat exchanger is cleaned and before it is returned to service, the sides of the heat exchange surfaces which come into contact with the cracking products are treated under reducing conditions until the greatest possible reduction of the Fe.sub.2 O.sub.3 on the surface to Fe.sub.3 O.sub.4 has taken place, without submicron Fe powder being formed.Type: GrantFiled: October 11, 1994Date of Patent: March 26, 1996Assignees: Mannesmann Aktiengesellschaft, KTI Group B.V.Inventors: Simon Barendregt, Gerhard Zimmermann, Grete Bach
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Patent number: 5500243Abstract: A process for forming dielectric thin film coating suitable for use in magnetic thin film heads includes the application of a spin-on-glass material on a substrate, the spinning of the substrate, the preheating of the substrate and thin film to remove the solvents in the spin-on-glass material, and the heating in a reducing or in an inert atmosphere of the film to provide a conversion to a SiO.sub.2 film. The reducing and the inert atmospheres permit carbon to be left in the film. The presence of the carbon improves structural properties of the thin films.Type: GrantFiled: March 27, 1995Date of Patent: March 19, 1996Assignee: Eastman Kodak CompanyInventor: Danny D. L. Yang