Patents Examined by Brian J. Leitten
  • Patent number: 3959153
    Abstract: This invention is a method for manufacturing an electrophotographic developer for use in electrophotography or electrostatic recording processes. The developer comprises polymer particles by suspension polymerizing, in an aqueous phase, a polymerization liquid comprising at least one polymerizable vinyltype monomer, a polymerization initiator, and a finely divided dispersion stabilizer either sparingly soluble or insoluble in water and said monomer. Said polymerization liquid is blended prior to suspension polymerization. The improvement includes adding to said liquid, a resinous substance, as a fluidizer which is soluble in the monomer and having a solubility parameter in the range of from 7.8 to 16.1. During the blending, the dispersion stabilizer is uniformly dispersed throughout said polymerization liquid.
    Type: Grant
    Filed: May 28, 1970
    Date of Patent: May 25, 1976
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shigeru Sadamatsu, Hiroyuki Kaneko, Keitaro Ohe, Daijiro Nishio
  • Patent number: 3959527
    Abstract: Costume jewelry is manufactured through photofabrication processes from flat metal sheets to form items such as earrings and small pendants. A standard photo-fabrication operation includes covering a metal sheet with a layer of photosensitive, chemically resistive material commonly referred to as a photoresist. Portions of the covered sheet are exposed to light to outline the earrings and pendants on the sheet. The sheet is then developed and the exosed metal surface portions are chemically etched to remove excess metal and form the earrings and pendants. Thereafter, surface treatments involve supplementary photofabrication operations to provide different colors and finishes on the earrings and pendants by etching, plating and staining the exposed metal surfaces, all of which are supplemented by the retention of portons of photoresist layers of selected colors.
    Type: Grant
    Filed: April 8, 1974
    Date of Patent: May 25, 1976
    Inventor: Lee John Droege
  • Patent number: 3957553
    Abstract: Alkaline etching baths for aluminum are claimed in which oxidizing agents at low concentration replace chromates and fluorides in the control of galvanizing. Etching processes using these new baths are also disclosed and claimed.
    Type: Grant
    Filed: March 1, 1974
    Date of Patent: May 18, 1976
    Assignee: Pennwalt Corporation
    Inventor: Harold Vernon Smith
  • Patent number: 3957567
    Abstract: An apparatus for splicing together two large sheets of material, e.g., seismic sections, where one operator can carry out the splicing operation. The apparatus is comprised of a work surface onto which the material is positioned and held in place by vacuum and mechanical means. A carriage, mounted on guide means which extend across the work surface, has a knife which cuts the material along a desired line as the carriage moves in a first direction and adhesive dispensing means to apply tape to the material along said desired line as the carriage moves in the opposite direction.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: May 18, 1976
    Assignee: Mobil Oil Corporation
    Inventors: Jarsel M. Pursell, George N. Willman
  • Patent number: 3956052
    Abstract: A ceramic green sheet material is metallized by laminating a thin organic material, preferably MYLAR, to a ceramic green sheet surface, and then employing an electron beam to define a predetermined pattern of openings extending through the organic material and selectively into and through the green sheet. The resulting channels and via holes are then filled with a metal paste. The organic mask is removed by peeling subsequent to the metal paste deposition step.
    Type: Grant
    Filed: February 11, 1974
    Date of Patent: May 11, 1976
    Assignee: International Business Machines Corporation
    Inventors: Walter W. Koste, Ernest N. Urfer
  • Patent number: 3956047
    Abstract: Improvement in the process and apparatus of Application Ser. No. 236,766 filed Mar. 21 1971, now U.S. Pat. No. 3,769,124. There is described a technique for butt welding a trailing end of one roll of thermoplastic film or sheet material to the leading edge of another roll of such material by vertically superimposing the trailing and leading portions of the two rolls, aligning the lateral edges of such portions over a significant distance sufficient to insure angular alignment of the two rolls at the butt weld. Severing the two portions along a coincident transverse line, heating the severed portions to an extent sufficient to weld such together, and bringing the heated transverse edges of the two portions together while maintaining lateral edge alignment of said portions, whereby butt welding such into a continuous sheet.
    Type: Grant
    Filed: February 1, 1974
    Date of Patent: May 11, 1976
    Assignee: Mobil Oil Corporation
    Inventor: David Emil Johnson
  • Patent number: 3954537
    Abstract: A process for the production of multiple-layer sheets, panels, shaped articles, or the like laminates having at least one layer of polyurethane foam material wherein at least one side of the polyurethane foam layer is bonded under the action of heat to a layer of cross-linked polyethylene foam material.
    Type: Grant
    Filed: December 31, 1974
    Date of Patent: May 4, 1976
    Assignee: Dynamit Nobel Aktiengesellschaft
    Inventors: Franz-Werner Alfter, Hans-Ulrich Breitscheidel, Heinz-Gerd Reinkemeyer, Manfred Simm
  • Patent number: 3953271
    Abstract: Artificial leather having a crepe pattern is produced by a process comprising preparing a base cloth material at least a part of which is composed of highly heat shrinkable yarn and less heat shrinkable yarn, said highly heat shrinkable yarn having a heat shrinkage rate of at least 10 percent at a temperature within the range at to and the difference in the heat shrinkage rate between said highly heat shrinkable yarn and said less heat shrinkable yarn being at least 5 percent within the same temperature range, forming a synthetic resin film layer on said base cloth material to obtain an artificial leather material having a smooth synthetic resin surface, and subjecting said artificial leather material to a heat treatment to form a crepe pattern on said synthetic resin film layer due to the heat shrinkage difference between said highly heat shrinkable yarn and said less heat shrinkable yarn of said part of said base cloth material.
    Type: Grant
    Filed: December 17, 1973
    Date of Patent: April 27, 1976
    Assignee: Kawashima Orimono Co., Ltd.
    Inventors: Yujiro Matsuda, Kazuchika Nakamura
  • Patent number: 3951707
    Abstract: A glass or other dielectric backed transducer structure is formed by utilizing a series of processes including at least one electrostatic bond. The processes enable one to bond a semiconductor wafer to a dielectric as a glass wafer. Then by selectively removing certain conductively semiconductor, one obtains a "thin ribbon" piezoresistive bridge secured to a thin glass wafer. The resultant structure is entirely unanticipated by the prior art.A glass part is also formed by electrostatically bonding a glass wafer to a semiconductor wafer, polishing the glass to a desired depth, masking the polished glass layer according to a desired pattern representative of the glass part, etching away all the glass except the desired pattern, and thence removing all the semiconductor.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: April 20, 1976
    Assignee: Kulite Semiconductor Products, Inc.
    Inventors: Anthony D. Kurtz, Joseph R. Mallon, Harold Bernstein, Richard Alan Weber
  • Patent number: 3951709
    Abstract: A process step and material for use in the manufacture of semiconductor photomasks. To facilitate the etching of unmasked chromium, gold, and other metals capable of forming oxychloride derivatives on preselected portions of a substrate material, the material is exposed to a low pressure rf generated "cold" plasma (under produced from a homogeneous gaseous mixture of oxygen and a halogen containing compound.
    Type: Grant
    Filed: February 28, 1974
    Date of Patent: April 20, 1976
    Assignee: LFE Corporation
    Inventor: Adir Jacob
  • Patent number: 3948719
    Abstract: A method of and apparatus for applying and securing mirror mounts to the inboard surfaces of windshields. The apparatus includes means for optically scanning the surface of the windshield and detecting the presence of antenna wires or other markings therein to be used as reference points for the placement of a mirror mount on the windshield. The apparatus also includes means responsive to such detecting means for placing and affixing a mirror mount on the windshield in a desired region thereon.
    Type: Grant
    Filed: January 30, 1975
    Date of Patent: April 6, 1976
    Assignee: Libbey-Owens-Ford Company
    Inventor: Robert R. Beckham
  • Patent number: 3948716
    Abstract: A process for the preparation of unsaturated polyester resin based sheet moulding compounds in which the compound is matured by including a gelling agent for the copolymerisable monomer in the resin matrix and subjecting the sheet moulding compound to a temperature sufficient to cause the gelling agent to gel the copolymerisable monomer without activating the polymerisation initiator.
    Type: Grant
    Filed: October 1, 1973
    Date of Patent: April 6, 1976
    Assignee: BP Chemicals International Limited
    Inventor: David Philip Fry
  • Patent number: 3948709
    Abstract: As a laminated film formed by continuously melt extruding an .alpha.-olefin polymer as a covering film on a traveling, continuous substrate film of an .alpha.-olefin polymer is being cooled by means of a cooling roll contacting the covering film side, pressing rolls are pressed against the laminated film on the substrate film side, along the lateral edge parts thereof, and toward the cooling roll thereby to cause local plastic deformation and thinning of the cover film, which has not fully solidified, due to elastic deflection without appreciably thinning the substrate film, and then the pressing rolls are retracted away from the laminated film, whereby thin-film regions for ensuring positive gripping by tentering clips for lateral stretching are formed along the lateral edge parts.
    Type: Grant
    Filed: August 27, 1973
    Date of Patent: April 6, 1976
    Assignee: Oji Yuka Goseishi Kabushiki Kaisha
    Inventors: Saburo Ida, Kuniharu Tobita
  • Patent number: 3947619
    Abstract: A method of joining pieces of fabric wherein a high temperature-resistant shrinkable film is placed between the overlapping or on the abutting ends of fabric, after these have been impregnated with a highly volatile solvent for the film, and the ends of the fabric are joined by subsequent pressing.
    Type: Grant
    Filed: October 15, 1974
    Date of Patent: March 30, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventor: Joachim Wank
  • Patent number: 3945868
    Abstract: Metal foil is applied to sheet metal by a film of polythene adhering to both and separating the two from direct contact, for improving the heat-insulating qualities of the sheet metal, by superimposing the film on the sheet metal, superimposing the foil on said film, and drawing the laminated assembly under tension along a convex curved surface, said foil next to said surface, and simultaneously heating said sheet metal to heat, by conduction, said film, heat and pressure on said foil causing it to bond to said foil and said film.
    Type: Grant
    Filed: May 31, 1973
    Date of Patent: March 23, 1976
    Assignee: Heatshield Research and Development Pty., Ltd.
    Inventor: John Ian Menzies
  • Patent number: 3945877
    Abstract: Compositions are disclosed for making thermoplastic adhesives and coatings. The compositions include coal tar pitch and two copolymers of ethylene in which the copolymers are cross-linked with dicumyl peroxide.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: March 23, 1976
    Assignee: United States Steel Corporation
    Inventor: Arthur J. Marcozzi
  • Patent number: 3943031
    Abstract: The invention is a simplified roller-type apparatus for laminating articles in sheet form with transparent plastic laminating film. It comprises a heating station for heating the work and a pair of pressure rolls for bonding the film to one or both sides of each article. The heating station comprises a pair of vertically opposed flat plates that are separable to permit the work to be inserted between them, and means for heating the plates so that they act as sources of heat for activating the adhesive layer of the laminating film. In the preferred embodiment, the lower plate is fixed and the upper plate is mounted for vertical movement relative to the lower plate. The two plates also act as guides for directing the heated work into the nip formed by the pressure rolls.
    Type: Grant
    Filed: May 14, 1973
    Date of Patent: March 9, 1976
    Assignee: Seal Incorporated
    Inventors: Theodore H. Krueger, David B. Spaulding
  • Patent number: 3941629
    Abstract: A method of making thin diaphragms having an accurately controllable thickness for semiconductor pressure responsive devices. An oxide coating is thermally grown in selected regions on the front side of a silicon wafer. The oxide extends into the wafer at an extremely accurate and controllable depth to form a groove in the wafer front side defined by the selected regions. Portions of the wafer are then etched from the back side until the bottom of the groove is reached thereby providing a diaphragm having a thickness equal to the accurately reproducible depth of the groove.
    Type: Grant
    Filed: April 11, 1974
    Date of Patent: March 2, 1976
    Assignee: General Motors Corporation
    Inventor: James M. Jaffe
  • Patent number: 3941638
    Abstract: A method for constructing a relief sculptured sound grill comprising the steps of soaking a strip of flexible material in a starch solution and thereafter securing the flexible material between a male and female mold member so that the mold members form the desired relief sculpture on the flexible material. The strip of material is then dried and paint is applied to the relief sculpture and dried thereby permanently forming the relief sculpture on the strip of material. A frame is then secured around the periphery of the strip of material and the mold members are removed so that a hardener may be applied to the entire strip of material. The strip of material with the attached frame is then dried thus completing the relief sculptured sound grill of the present invention.
    Type: Grant
    Filed: September 18, 1974
    Date of Patent: March 2, 1976
    Inventors: Reginald Patrick Horky, Scott Octave Frost
  • Patent number: 3939027
    Abstract: A method of bonding a fluoro plastic to a substance to be covered therewith. The fluoro plastic is heated along with the substance to be covered to a temperature above the melting point of the fluoro plastic, and then the substance and the fluoro plastic in the melted state are brought into contact and kept at the temperature for a time sufficient to wet the boundary surface between the fluoro plastic and the substance. The boundary surface is then gradually cooled from the melting point to a further temperature at which the rate of crystallization of the fluoro plastic is maximized. Thereafter the substance is cooled to room temperature. The process prevents the internal stress caused in the fluoro plastic from being concentrated at the boundary surface.
    Type: Grant
    Filed: August 6, 1974
    Date of Patent: February 17, 1976
    Assignee: Masao Kurokawa
    Inventors: Shogo Ohya, Momoyoshi Takagi, Masao Kurokawa