Patents Examined by T. A. Powers
  • Patent number: 5178930
    Abstract: A thermal transfer recording medium comprising a support and a heat-fusible ink layer, coated on the support, which comprises a colorant and a binder. The binder comprises a polyurethane having bisphenol units or a polyether having bisphenol units and an hydroxyl group at the terminals. The thermal transfer recording medium provides a transferred image with a high quality regardless of the transferring paper.
    Type: Grant
    Filed: February 20, 1991
    Date of Patent: January 12, 1993
    Assignee: Kao Corporation
    Inventors: Kouichi Sakai, Sadashi Ueda, Keizou Takahashi, Hiroshi Shibano
  • Patent number: 5175141
    Abstract: Bi-based superconducting ceramic films having high Tc's and high critical current densities are formed. The superconducting film is formed on a non-superconducting saubstrate of Bi.sub.2 Sr.sub.1-x Ca.sub.x O.sub.y. Due to crystalline similarity between the superconducting film and the underlying ceramic substrate, the crystalline structure of the film is improved. There are few impurities which contaminate the superconducting film since the constituent elements of the substrate are also the consitutents of the superconducting film.
    Type: Grant
    Filed: September 12, 1989
    Date of Patent: December 29, 1992
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yasuhiko Takemura
  • Patent number: 5149681
    Abstract: A pre-existing superconductor ceramic which is bonded to a substrate is passed through a relatively short heating zone to melt the ceramic superconductor. As the superconductor is subsequently cooled after it has passed through the heating zone, a temperature gradient is established along the superconductor which causes the melted crystals to renucleate and grow along and parallel to the temperature gradient. The resulting crystalline structure exhibits improved superconducting properties when the superconductor is placed in the presence of a magnetic field. For appropriate applications, the substrate can be formed as a wire.
    Type: Grant
    Filed: May 14, 1990
    Date of Patent: September 22, 1992
    Assignee: General Atomics
    Inventors: Tihiro Ohkawa, Richard B. Stephens, Albert J. Lieber
  • Patent number: 5145832
    Abstract: A flexible superconducting wire element comprising a flexible tape of partially stabilized (.about.3 mole % yttria) yttria-stabilized zirconia (YSZ), a buffer layer of fully stabilized (between 8 and 18 mole % yttria, preferably 9 mole %) YSZ deposited on the flexible tape, and a high-temperature, perovskite superconductor such as YBaCuO deposited on the buffer layer. The tape provides the strength while remaining flexible. The buffer layer is flexible because of its thinness (.about.100 nm), but provides a good crystallographic template for the growth of oriented perovskite superconductors. Thereby, the superconducting properties of the wire element approach those of a superconducting film deposited on a rigid substrate.
    Type: Grant
    Filed: May 22, 1991
    Date of Patent: September 8, 1992
    Assignee: Bell Communications Research, Inc.
    Inventors: Kolagani S. Harshavardhan, Samuel M. Sampere, Timothy D. Sands, Thirumalai Venkatesan
  • Patent number: 5143782
    Abstract: A thermal transfer recording sheet comprising a base film, a heat transferable ink layer formed on one side of the base film and a heat resistant lubricating layer formed on the other side of the base film, wherein said heat resistant lubricating layer comprises round particles, fine particles having a particle size smaller than that of the round particles and a heat resistant binder resin, as the main components, and the round particles are projecting from the standard surface of the heat resistant lubricating layer.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: September 1, 1992
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Takashi Morishima, Yukichi Murata, Tadashi Okabayashi, Yutaka Kawai
  • Patent number: 5141797
    Abstract: An ink jet recording sheet comprising a sheet support, e.g., paper, bearing a surface coating comprising (a) a water soluble organic polymeric binder, (b) a titanium chelate crosslinking agent as defined, and (c) an inorganic filler, the weight ratio of (c) to (a) preferably being about 7 to 1 to about 1 to 2. The ink jet recording sheet is useful for ink jet printing.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: August 25, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James W. Wheeler
  • Patent number: 5102856
    Abstract: A high solids contents, aqueous-based, self-contained printing ink is provided including, a non-volatile diluent, an acidic color developer, a binder, and a water soluble surfactant which is compatible with the binder in the ink, but which is incompatible with the binder when the ink has dried. The high solids, self-contained printing ink further includes microcapsules containing a dyestuff precursor that is capable of reacting with the acidic color developer to form a color. The ink may be used to prepare self-contained carbonless copy sheets.
    Type: Grant
    Filed: November 7, 1990
    Date of Patent: April 7, 1992
    Assignee: The Standard Register Company
    Inventors: Gary W. Doll, Michael E. Seitz