Patents by Inventor Yusuke Ohshima

Yusuke Ohshima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • NANO-SIZED SILVER PARTICLE INK, NANO-SIZED SILVER PARTICLE SINTERED BODY, AND METHOD FOR PRODUCING NANO-SIZED SILVER PARTICLE INK
    Publication number: 20170215279
    Abstract: Provided are a fine silver particle ink composed of hexylamine, dodecylamine, oleic acid, fine silver particles and a solvent, in which the volume resistivity of a sintered body at 100° C. obtained after the ink is applied on a substrate by spin coating is 8 to 25 ?? cm, a sintered body thereof, and a method for producing a fine silver particle ink. When a fine silver particle ink containing coated fine silver particles is produced by a silver-amine complex decomposition method, production can be carried out smoothly. The fine silver particle ink can be sintered even at a low temperature, and a sintered body thereof has a mirror surface and low volume resistance.
    Type: Application
    Filed: March 2, 2017
    Publication date: July 27, 2017
    Inventors: Hitoshi Kubo, Yusuke Ohshima, Noriaki Nakamura, Hiroshi Noguchi, Junichi Taniuchi, Yuichi Makita
  • Fine silver particle ink, fine silver particle sintered body, and method for producing fine silver particle ink
    Patent number: 9674953
    Abstract: Provided are a fine silver particle ink composed of hexylamine, dodecylamine, oleic acid, fine silver particles and a solvent, in which the volume resistivity of a sintered body at 100° C. obtained after the ink is applied on a substrate by spin coating is 8 to 25 ??cm, a sintered body thereof, and a method for producing a fine silver particle ink. When a fine silver particle ink containing coated fine silver particles is produced by a silver-amine complex decomposition method, production can be carried out smoothly. The fine silver particle ink can be sintered even at a low temperature, and a sintered body thereof has a mirror surface and low volume resistance.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: June 6, 2017
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Hitoshi Kubo, Yusuke Ohshima, Noriaki Nakamura, Hiroshi Noguchi, Junichi Taniuchi, Yuichi Makita
  • Semiconductor device and heat-dissipating mechanism
    Patent number: 9607922
    Abstract: A semiconductor device includes a semiconductor chip which can be a heat-generating semiconductor chip or a semiconductor relay substrate in which an integrated circuit or wiring is built in. A sintered-silver-coated film is adhered on a surface layer part of the semiconductor substrate, interposed by a silicon oxide film. A heat-dissipating fin (heat sink), which may be copper or aluminum, is bonded on the sintered-silver-coated film, interposed by an adhesive layer.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: March 28, 2017
    Assignee: TANAKA KIKINZOKU KOGYO K.K.
    Inventors: Kenji Matsuda, Dai Shinozaki, Yuichi Makita, Hitoshi Kubo, Yusuke Ohshima, Hidekazu Matsuda, Junichi Taniuchi
  • SEMICONDUCTOR DEVICE AND HEAT-DISSIPATING MECHANISM
    Publication number: 20160049350
    Abstract: A semiconductor device includes a semiconductor chip which can be a heat-generating semiconductor chip or a semiconductor relay substrate in which an integrated circuit or wiring is built in. A sintered-silver-coated film is adhered on a surface layer part of the semiconductor substrate, interposed by a silicon oxide film. A heat-dissipating fin (heat sink), which may be copper or aluminum, is bonded on the sintered-silver-coated film, interposed by an adhesive layer.
    Type: Application
    Filed: March 3, 2014
    Publication date: February 18, 2016
    Inventors: Kenji MATSUDA, Dai SHINOZAKI, Yuichi MAKITA, Hitoshi KUBO, Yusuke OHSHIMA, Hidekazu MATSUDA, Junichi TANIUCHI
  • FINE SILVER PARTICLE INK, FINE SILVER PARTICLE SINTERED BODY, AND METHOD FOR PRODUCING FINE SILVER PARTICLE INK
    Publication number: 20150245480
    Abstract: Provided are a fine silver particle ink composed of hexylamine, dodecylamine, oleic acid, fine silver particles and a solvent, in which the volume resistivity of a sintered body at 100° C. obtained after the ink is applied on a substrate by spin coating is 8 to 25 ??cm, a sintered body thereof, and a method for producing a fine silver particle ink. When a fine silver particle ink containing coated fine silver particles is produced by a silver-amine complex decomposition method, production can be carried out smoothly. The fine silver particle ink can be sintered even at a low temperature, and a sintered body thereof has a mirror surface and low volume resistance.
    Type: Application
    Filed: July 11, 2013
    Publication date: August 27, 2015
    Inventors: Hitoshi Kubo, Yusuke Ohshima, Noriaki Nakamura, Hiroshi Noguchi, Junichi Taniuchi, Yuichi Makita