Patents Examined by J. J. Gallagher
  • Patent number: 4216045
    Abstract: A novel process is provided for producing an improved electrode for an alkaline battery comprising the steps of adding an unsintered fluorocarbon resin powder to an active material powder and intimately mixing them together, applying a shear force to said mixture to thereby form agglomerates capable of retaining said active material powder in a network structure resulting from a fiber-formation of said fluorocarbon resin powder, adding an aqueous solution of a paste to said agglomerates, kneading them to mutually bind said agglomerates and thus forming a rubbery mass converting said rubbery mass into a sheet and attaching the sheet thus formed onto an electrically conductive core. The process provides an electrode having excellent reactivity and results in improved production efficiency.
    Type: Grant
    Filed: May 16, 1978
    Date of Patent: August 5, 1980
    Assignee: Sanyo Electric Co., Ltd.
    Inventor: Yuji Morioka
  • Patent number: 4213816
    Abstract: A method for bonding a layer of porous polymeric material to a rigid implantable portion of a prosthetic device, which includes the steps of (a) forming a substrate by coating the implantable portion with material which is chemically compatible with the porous polymeric material and which has a melt viscosity and/or melting temperature lower than that of the porous polymeric material, (b) covering the substrate with a porous polymeric material in powder form capable of forming said porous polymeric layer for forming a composite coating on the implantable portion, and (c) heating the substrate and porous polymeric material to a temperature high enough to cause the substrate material to flow into the adjacent pores and low enough so that the porous material will maintain its shape so that the porous layer will be bonded to the substrate and the outer pores will be open to accommodate tissue ingrowth, and an apparatus formed by said method.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: July 22, 1980
    Assignee: Glasrock Products, Inc.
    Inventor: Harold B. Morris
  • Patent number: 4214025
    Abstract: A mesh electrode for a c.r.t. display device consists of a number of coplanar portions of mesh insulated from each other, and secured to a support plate by means of two layers of refractory compound. The first layer is applied to the support plate and allowed to set before the second layer is applied so as to space the mesh portions from the support plate by at least the thickness of the first layer.
    Type: Grant
    Filed: August 22, 1977
    Date of Patent: July 22, 1980
    Assignee: English Electric Valve Company Limited
    Inventor: Ralph D. Nixon
  • Patent number: 4211821
    Abstract: Thin monocrystalline like layers and articles comprising such layers as well as methods of making the layers and articles are disclosed. The layer have a thickness on the order of a micron and have a surface area on the order of 1 cm.sup.2. The layers are made out of a given material and are grown on a layer made of a material different from the given material which rests on a crystal mass made of either the same material or of a material having the same or a related structure as the crystal to be grown.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: July 8, 1980
    Assignee: Agence Nationale de Valorisation de la Recherche (ANVAR)
    Inventor: Armand Hadni
  • Patent number: 4210475
    Abstract: Rubber compounds are readily bonded to tire cords using a dip process in which the dip contains an alkaline aqueous dispersion of a mixture of a major amount by weight of a rubbery vinyl pyridine/styrene/butadiene copolymer and a minor amount of a lignin amine-resorcinol-formaldehyde reaction product.
    Type: Grant
    Filed: January 10, 1979
    Date of Patent: July 1, 1980
    Assignee: The General Tire & Rubber Company
    Inventors: Terry C. Neubert, Donald W. Anderson
  • Patent number: 4201616
    Abstract: A multi-layered printed circuit board is disclosed having a plurality of circuitized laminations therein. The laminates are fabricated or secured by curing layers of glass cloth which have been impregnated with heat curable resins at temperatures in excess of their glass transition temperature, the point at which such material begins to distort.Those laminations which will see at least one further curing cycle, after having themselves been cured, are formed from glass cloth impregnated heat curable resin combinations having a glass transition temperature which is significantly higher than that of the heat curable materials employed to form the subsequently and singly cured laminations. In this manner, lamination shift or distortion is appreciably reduced since those laminations which undergo a plurality of "curing" cycles, only experience one excursion beyond their transition temperature. Thus, registration mismatch between any of the circuitized laminates will not exceed acceptable levels.
    Type: Grant
    Filed: June 23, 1978
    Date of Patent: May 6, 1980
    Assignee: International Business Machines Corporation
    Inventors: Leroy N. Chellis, Theron L. Ellis
  • Patent number: 4201802
    Abstract: A process for manufacturing prefinished hardboard includes the use of a pre-press sealer comprising an aqueous mixture of a polyvinyl alcohol polymer in conjunction with emulsified fatty acid and/or fatty esters, an amine or similar emulsifier, and aluminum stearate. The pre-press sealer provides excellent sealing and hardening fiber binding to the porous fiberboard surface as well as improving the release from the press after the fiberboard is formed in a press under heat and pressure.
    Type: Grant
    Filed: April 21, 1978
    Date of Patent: May 6, 1980
    Assignee: SCM Corporation
    Inventor: Joseph A. Vande Kieft
  • Patent number: 4200480
    Abstract: Pipe sections of polyester fiberglass, epoxy fiberglass or of other diverse or same materials are adhesively joined together or to reaction vessels by applying to one mating surface an adhesive composition comprising a solution of non-reactive elastomer as for example, butadieneacrylonitrile rubber dissolved in a mixture of polymerizable acrylic monomers and acrylic acid monomer such as methyl methacrylate and acrylic acid, containing a polymerization catalyst such as benzoyl peroxide, and applying to the other mating surface a tertiary amine activator, bringing the mating surfaces together and allowing the adhesive to cure to a set. In another embodiment the tertiary amine is encapsulated in a rupturable microsphere and dispersed in the adhesive composition. The microspheres may be ruptured before or after the adhesive is applied.
    Type: Grant
    Filed: November 7, 1977
    Date of Patent: April 29, 1980
    Assignee: Pratt & Lambert, Inc.
    Inventors: Leon E. Wolinski, Peter D. Berezuk
  • Patent number: 4195124
    Abstract: A solar energy absorber consisting of a metallic copper or copper alloy substrate and a black to dark brown copper oxide coating on its surface. The copper oxide coating is formed by treating the surface of the substrate with an aqueous alkaline solution containing peroxodisulfuric acid or an inorganic peroxodisulfate. The solution may be activated by adding an oxidizing agent or applying ultraviolet or ultrasonic irradiation.
    Type: Grant
    Filed: April 21, 1977
    Date of Patent: March 25, 1980
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Doi, Shiyuichiro Ochiai, Shigeyuki Kawai, Kazuaki Miyamoto, Tadashi Sasaki
  • Patent number: 4193832
    Abstract: The instant invention is directed to a method for bonding one or more substrates by applying adhesives comprising organic polyisocyanates and compounds containing isocyanate-reactive hydrogen atoms which react to form polyurethanes, or moisture-hardening reaction products containing free isocyanate groups or excess quantities of polyisocyanates and compounds containing isocyanate-reactive hydrogen atoms, the improvement wherein said compounds containing isocyanate-reactive hydrogen atoms are dispersions of polymers in organic polyhydroxyl compounds.
    Type: Grant
    Filed: April 24, 1978
    Date of Patent: March 18, 1980
    Assignee: Bayer Aktiengesellschaft
    Inventors: Artur Reischl, Rudolf Hombach, Manfred Dollhausen
  • Patent number: 4193831
    Abstract: Water proofing compositions containing a reclaimed butyl rubber of used inner tube scraps as the active component have a high adhesion to cement mortar or concrete and are used for water proofing materials in buildings and civil engineering works.
    Type: Grant
    Filed: October 27, 1977
    Date of Patent: March 18, 1980
    Assignee: Hayakawa Rubber Company Limited
    Inventors: Toshihiro Fujii, Sekiji Yokota
  • Patent number: 4191805
    Abstract: A method of forming a layer of material from a solution containing the material and a solvent which comprises the steps of forming the solution into a layer, contacting at least one major face of the solution layer with a wall which is permeable over the area of that face substantially to the vapor phase only of the solvent, and effecting the escape of solvent simultaneously from both major faces of the layer including the one major face by vapor diffusion through the wall so as to set the layer.
    Type: Grant
    Filed: September 12, 1977
    Date of Patent: March 4, 1980
    Assignee: BFG Glassgroup
    Inventor: Hans-Henning Nolte
  • Patent number: 4191800
    Abstract: Processes and devices are described which employ flexible substrates made from cloth impregnated with a resin of a particular composition. The flexible substrate is made into double-clad printed wiring substrate for use in double-sided circuits. These substrates exhibit excellent dimensional stability during circuit fabrication and soldering as well as excellent flame retardance and electrical insulation resistance.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: March 4, 1980
    Assignee: Bell Telephone Laboratories, Incorporated
    Inventor: Kenneth A. Holtzman
  • Patent number: 4190474
    Abstract: A readily etchable printed circuit board is provided which comprises a resinous substrate having bonded to at least one surface thereof a composite metal structure. This metal structure includes a layer of copper foil having opposed first and second surfaces and a thin layer of nickel having opposed first and second surfaces with one of the surfaces of the copper foil being bonded to one of the surfaces of the nickel layer and the opposite opposed surface of the nickel layer being bonded to the resinous substrate with the nickel layer containing an effective amount of sulfur to render the copper foil and the nickel barrier layer mutually etchable, i.e., etchable by the same etchant. The preferred amount of sulfur ranges from about 0.05 to about 10.0 weight percent.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: February 26, 1980
    Assignee: Gould Inc.
    Inventors: Betty L. Berdan, Betty M. Luce
  • Patent number: 4190485
    Abstract: A method of welding a thermoshrinkable sheet comprises inserting between opposing faces of the sheet to be welded a piece of uncrosslinked resin tape containing peroxide, securing heat-resisting tapes on and adjacent outer faces of a welding portion of the sheet, and heating and pressing the welding portion.A device for use in the method includes a pressing plate having a heater, a receiving plate, a first link pivotally connected at one end to one end of the receiving plate and at the other end to the pressing plate, an operation lever pivoted on one end of the receiving plate, a second link pivotally connected to the free end of the operation lever and to the first link. The first and second links and the operation lever constitute a power amplifier mechanism in which the turning force of the operation lever is amplified to the pressure of the pressing plate through the second and first links.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: February 26, 1980
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazutoki Takeda, Yasuo Negishi, Yutaka Hibino
  • Patent number: 4189524
    Abstract: To reduce the proportion of rejects resulting by reasons of short circuits in the manufacture and use of miniaturized multilayer circuits and to improve the electric efficiency, there is inserted between each conductive layer of low resistance and each insulating layer of high thermal stability, a very thin layer of a conductive material, preferably non-magnetic, of high resistivity and of crystallographic reference at least compatible with respect to the first conducting material and of low or negligible thermal expansion in the range of temperatures to which the circuits are submitted both during manufacture and use.
    Type: Grant
    Filed: April 29, 1977
    Date of Patent: February 19, 1980
    Assignee: Compagnie Internationale pour l'Informatique
    Inventor: Jean-Pierre Lazzari
  • Patent number: 4188247
    Abstract: A process for the manufacture of pole structures for magnetic transducing heads is described in which the configuration of the non-magnetic gaps is formed by abrading the ferrite pole structure through a mask to erode recesses in the gap area which have inclined walls. The final dimension of the gap defining face of one or the magnetic elements is determined by removing material from the masked face of the structure until the dimension between the recesses has the desired value.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: February 12, 1980
    Assignee: Data Recording Instrument Company Limited
    Inventors: Peter C. Ridgway, Derek F. Case
  • Patent number: 4188447
    Abstract: Sustained release compositions containing depots of active substances such as soaps, detergents, antimicrobial agents and the like dispersed in a flexible carrier which are slowly released during use.
    Type: Grant
    Filed: July 20, 1977
    Date of Patent: February 12, 1980
    Assignee: Collo GmbH
    Inventor: Peter Ehlenz
  • Patent number: 4187130
    Abstract: A method for forming shaped articles from glass fiber reinforced gypsum. An aqueous slurry of calcium sulfate hemihydrate, water and glass fibers contains between 22 and 45 parts by weight water, 100 parts by weight calcium sulfate hemihydrate and 3 to 10 parts by weight glass fiber. The slurry is provided as a continuous ribbon on a moving, water-impermeable first membrane. A water-impermeable second membrane is applied above the continuous ribbon and sealed along its side edges to the side edges of the first membrane to form a sandwich consisting of the two membranes and the slurry ribbon.The sandwich is shaped prior to the setting of the gypsum and is retained in the desired shape until initial setting occurs. Thereafter at least a portion of one of the two membranes is removed and substantially all of the uncombined water is removed from the shaped ribbon.
    Type: Grant
    Filed: February 27, 1976
    Date of Patent: February 5, 1980
    Assignee: H. H. Robertson Company
    Inventor: Glenn E. Kautz
  • Patent number: 4186242
    Abstract: A process for the preparation of lignocellulosic composite using urea-formaldehyde adhesive is described characterized by treating the lignocellulosic constituents with ammonium-base lignosulfonate prior to pressing to decrease the emission of formaldehyde.
    Type: Grant
    Filed: March 8, 1976
    Date of Patent: January 29, 1980
    Assignee: Georgia-Pacific Corporation
    Inventor: Howard W. Holmquist