Patents Examined by Norman Morgenstern
  • Patent number: 5162136
    Abstract: A method is disclosed for improving the rupture strength of a glass material which comprises coating an unannealed glass material with a tractable preceramic coating material capable of pyrolyzing to form a ceramic coating at a temperature not exceeding the annealing temperature of the glass material and heating the coated glass material to a temperature sufficiently high to permit pyrolysis of the pre-ceramic polymer without exceeding the annealing temperature of the glass for a period of time sufficient to form a ceramic coating on the surface of the glass material.
    Type: Grant
    Filed: July 30, 1990
    Date of Patent: November 10, 1992
    Inventors: Yigal D. Blum, Robert M. Platz
  • Patent number: 5116639
    Abstract: A process and machine are provided to manufacture furniture parts and the like with a unique, durable, low gloss finish which has a soft, satin feel, and imparts a monolithic appearance to the part. A blank cut from a suitable substrate material is grooved about its marginal edge to a depth near the opposite surface of the blank. A liquid edge protection material is poured into the groove and fully cured. The blank is then cut through at the filled groove to create a decorative protection strip about the marginal edge of the blank. The formed blank is next coated with a preselected paint or base material. After the base coat is cured, a layer of UV curable, protective material is applied to the painted surfaces of the blank. The UV coated blank is then translated through a multi-stage, continuous feed, ultraviolet processor to selectively and sequentially cure the protective coat. Powered rollers arranged in spaced apart groups convey the parts through the processor.
    Type: Grant
    Filed: February 7, 1989
    Date of Patent: May 26, 1992
    Assignee: Steelcase Inc.
    Inventors: Stephen B. Kolk, James P. Theuerkauf, Fredrick J. Walz
  • Patent number: 5114914
    Abstract: An improved method for producing high temperature superconductors comprising sintering ceramic superconductor material in a sealed confinement chamber made of non-reactive impervious material, thereby preventing loss of oxygen from the material during heating and eliminating the need for reoxygenation after sintering.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: May 19, 1992
    Assignee: Southwest Research Institute
    Inventors: Martin J. Sablik, Colin I. Nicholls, Robert E. Anderson
  • Patent number: 5106828
    Abstract: Superconducting oxides in the A, B, Cu oxide ternary system, where A is yttrium or a rare earth and B is an alkaline earth, are formed as thin films on a substrate by a sol-gel technique.
    Type: Grant
    Filed: July 20, 1987
    Date of Patent: April 21, 1992
    Assignee: North American Philips Corporation
    Inventors: Rameshwar N. Bhargava, William N. Osborne, Walter K. Zwicker
  • Patent number: 5082359
    Abstract: A method of forming a polycrystalline film, such as a diamond, on a foreign substrate involves preparing the substrate before film deposition to define discrete nucleation sites. The substrate is prepared for film deposition by forming a pattern of irregularities in the surface thereof. The irregularities, typically craters, are arranged in a predetermined pattern which corresponds to that desired for the location of film crystals. The craters preferrably are of uniform, predetermined dimensions (in the sub-micron and micron size range) and are uniformly spaced apart by a predetermined distance. The craters may be formed by a number of techniques, including focused ion beam milling, laser vaporization, and chemical or plasma etching using a patterned photoresist. Once the substrate has been prepared the film may be deposited by a number of known techniques. Films prepared by this method are characterized by a regular surface pattern of crystals which may be arranged in virtually any desired pattern.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: January 21, 1992
    Assignee: Epion Corporation
    Inventor: Allen R. Kirkpatrick
  • Patent number: 5080927
    Abstract: A thin film formation method includes the steps of holding a substrate in a reduced-pressure vapor phase reaction chamber having means for irradiating light in visible and ultraviolet ranges, supplying an organo-titanium compound containing a tri-azo group, and vapor-depositing a titanium nitride film on a surface of the substrate by an excitation reaction caused by light.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: January 14, 1992
    Assignee: Nippon Telegraph and Telephone Corp.
    Inventors: Koichi Ikeda, Masahiko Maeda, Yoshinobu Arita
  • Patent number: 5068131
    Abstract: In humid atmospheres (e.g., 40% relative humidity or above) solutions of 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride/2,2-bis[4-(aminophenoxy)phenyl]hexafluoropropane polyimides tend to be unstable in the sense that during spin coating operations undesirable precipitate formation occurs on the rotating surface of the wafer. The result is the formation of unacceptable coatings due to their irregularity and lack of uniformity. Described are solutions of these polyimide polymers in a solvent containing one or more liquid aromatic hydrocarbons having a boiling point at least about 110.degree. C. and one or more dipolar aprotic solvents having a boiling point of at least about 150.degree. C., such that the solution (a) contains on a weight basis from about 5% to about 50% of the polyimide, and (b) does not undergo precipitate formation during spin coating in an atmosphere of up to about 55% relative humidity.
    Type: Grant
    Filed: September 13, 1990
    Date of Patent: November 26, 1991
    Assignee: Ethyl Corporation
    Inventors: Allan A. Eisenbraun, Wesley C. Blocker
  • Patent number: 5064809
    Abstract: A Josephson junction consisting of high temperature ceramic superconductors layers, separated by an ultra-thin insulating barrier made of an non-oxide substance like diamond-like carbon. An integral part of this disclosure is the technique involving the use of an activated oxygen species for providing an oxygen chemical potential which is higher than that obtainable at barometric pressure.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: November 12, 1991
    Assignee: Troy Investments, Inc.
    Inventor: Aharon Z. Hed
  • Patent number: 5058526
    Abstract: A CVD apparatus having a single loading-unloading chamber that serves as a loading chamber in the left and center parts and as an unloading chamber in the right and center parts. Alternately, wafers provisionally stored in cassettes are put into and taken from an auxiliary chamber connected at the center part. The loading-unloading chamber has a sliding bed for slidingly transferring two cassettes, each used for temporarily carrying a plurality of wafers for loading from a load cassette table through the loading cassette to a reaction chamber and for unloading from the reaction chamber through an unloading cassette to an unloading cassette table.
    Type: Grant
    Filed: March 3, 1989
    Date of Patent: October 22, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshinari Matsushita, Kenji Fukumoto, Satoshi Takeda
  • Patent number: 5053383
    Abstract: The critical current density J.sub.c of a superconductive oxide film can be tailored, without substantial change in the critical temperature T.sub.c (R.dbd.0), by introduction of radiation damage into the superconductor. Exemplarily, this is done by exposure to energetic (e.g., 1 MeV) ions. The ability to tailor J.sub.c permits optimization of SQUIDS and other thin film devices, and makes it possible to produce superconductive interconnects that comprise "fuses" or current limiters.
    Type: Grant
    Filed: March 29, 1988
    Date of Patent: October 1, 1991
    Assignee: AT&T Bell Laboratories
    Inventors: Kenneth T. Short, Alice E. White
  • Patent number: 5047116
    Abstract: The invention relates to a method for producing a liquid transfer article for use in transferring the liquid to another surface comprising the steps of:(a) coating an article with at least one layer of a coating material selected from the group consisting of ceramic and metallic carbides;(b) superimposing over the coated surface a removable mask material of discontinuous material opaque to a beam of radiation of a selected energy level;(c) directing a laser having a beam of radiation of said selected energy level onto the coated surface of the article so as to produce in the area of the coated surface not covered by the discontinuous material a pattern of wells adapted for receiving liquid and wherein said pattern of wells is defined by the area of the coated surface which is not covered by the discontinuous material; and(d) removing the mask material from the coated article.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: September 10, 1991
    Assignee: Union Carbide Coatings Service Technology Corporation
    Inventors: Pierre Luthi, Christian Hidber
  • Patent number: 5047385
    Abstract: A method of forming a superconducting YBa.sub.2 Cu.sub.3 O.sub.7-x thin film with selected crystal orientation is described which comprises the steps of sputtering simultaneously Y, Ba and Cu onto the surface of a substrate, introducing oxygen at said surface during deposition, controlling the stoichiometry of the elements Y, Ba or both richer or poorer than the 1:2:3 stoichiometry within a few atom percent and followed by annealing to selectively grow an a-axis or a c-axis oriented film of YBa.sub.2 Cu.sub.3 O.sub.7-x.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: September 10, 1991
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Malcolm R. Beasley, Kookrin Char, Theodore H. Geballe, Robert H. Hammond, Aharon Kapitulnik, Andy Kent, Michio Naito, Byungdu Oh
  • Patent number: 5045526
    Abstract: A method for producing insulated superconductor wire including the steps of a tubular glass preform, filling it with a superconductor material, suspending the preform within an oven to heat a section of the preform to approximately its softening point, and drawing the softened preform into a superconductor wire. A plastic coating can be applied to the wire to increase its durability. The completed wire preferably includes a superconductor core having its superconductor phase aligned with the longitudinal axis of the wire, a glass coating over the superconductor core, and a plastic coating over the glass coating.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: September 3, 1991
    Assignee: Hewlett-Packard Company
    Inventors: V. K. Nagesh, Daniel J. Miller
  • Patent number: 5044311
    Abstract: A plasma chemical vapor deposition apparatus comprises a reaction chamber, electrodes provided in the reaction chamber and a side wall constituting part of the reaction chamber and having a wafer access opening, at least the side wall having its surface portion covered with an insulating member. The insulating member prevents abnormal discharge between the electrodes and side wall.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: September 3, 1991
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasukazu Mase, Masahiro Abe
  • Patent number: 5041311
    Abstract: A CVD method comprises the steps of making a plasma self-cleaning within a chamber using a gas which includes fluorine, coating an inside of the chamber by a first layer of a material which includes silicon and nitrogen, and forming a second layer on a predetermined surface within the chamber by a chemical vapor deposition. The second layer is made of a material which includes a quantity of nitrogen smaller than a quantity of nitrogen included in the first layer.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: August 20, 1991
    Assignee: Fujitsu Limited
    Inventors: Atsuhiro Tsukune, Kenji Koyama
  • Patent number: 5041306
    Abstract: An electrically conductive article comprising a dielectric substrate, such as a fabric, e.g., fiberglass fabric, and an electrically conductive inorganic nickel sulfide layer which is adherent to the substrate and has good electrical conductivity and stable electrical characteristics at high temperature. Such article is produced by contacting a porous dielectric substrate, such as fiberglass fabric, with an aqueous solution containing a soluble nickel salt, such as nickel sulfate, and a sulfur donor, such as sodium thiosulfate, drying the resulting wet substrate at ambient temperature, and heating the resulting substrate at elevated temperature of about 100.degree. C. to about 400.degree. C. to form an electrically conductive layer of nickel sulfide on the substrate.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: August 20, 1991
    Assignee: Rockwell International Corporation
    Inventor: Leslie F. Warren
  • Patent number: 5034265
    Abstract: A method of treating articles to improve their biocompatibility is disclosed. A polymeric substrate material is positioned within a reactor vessel and exposed to plasma gas discharge in the presence of an atmosphere of an inert gas and then in the presence of an organic gas, such as a fluorinated hydrocarbon gas, which forms a thin, biocompatible surface covalently bonded to the surface of the substrate. The method is particularly useful in the treatment of vascular graft materials to produce grafts that are both thrombi- and emboli-resistant.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: July 23, 1991
    Assignee: Washington Research Foundation
    Inventors: Allan S. Hoffman, Andrew M. Garfinkle, Buddy D. Ratner, Stephen R. Hanson
  • Patent number: 5034372
    Abstract: An improved method for producing superconductive oxide substance, wherein a solution containing therein a plurality of elements to constitute the superconductive oxide substance is atomized into mists, then the thus atomized mists are transported on a carrier gas into a chemical reaction device, and, after the chemical reaction in this chemical reaction device, the superconductive oxide substance is deposited on a substrate in a desired shape, with further heat-treatment of the thus deposited superconductive oxide substance in an oxygen-containing atmosphere at a temperature ranging from 200.degree. C. to 1,200.degree. C.
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: July 23, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shigeru Matsuno, Yoshio Kubo, Kiyoshi Yoshizaki, Mitsunobu Wakata, Syouji Miyashita, Fumio Fujiwara
  • Patent number: 5032461
    Abstract: A high speed process for forming a multi layered thin film structure in a vacuum wherein each film is less than about four microns thick and the total layers can reach upwards to 4,000 or more. The polymeric layers are formed of a cross linked component selected from the group consisting of polyfunctional acrylates and mixtures of polyfunctional acrylates and monocrylates with the component having a preferable molecular weight of between 200 and 300 and a vapor pressure preferably in excess of 1.times.10.sup.-2 Torr. The polymeric layers may be interleaved with metal layers.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: July 16, 1991
    Assignee: Spectrum Control, Inc.
    Inventors: David G. Shaw, Angelo Yializis, Donald S. Strycker, Mooyoung Ham
  • Patent number: 5032568
    Abstract: A method is provided to apply a coating of a superconducting ceramic oxide to a substrate comprising introducing an atomized aqueous solution comprising at least three metal salts into inductively coupled plasma so as to deposit a superconductive ceramic oxide on the substrate, or alternatively, to deposit a mixed metal oxide on the substrate, which is converted into a superconductive ceramic oxide by post-annealing.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: July 16, 1991
    Assignee: Regents of the University of Minnesota
    Inventors: Yuk-Chiu Lau, Emil Pfender