Patents by Inventor Katsutoshi Hashimoto

Katsutoshi Hashimoto 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).

  • Urethane foam molded product and method for producing the same
    Patent number: 9034935
    Abstract: The present invention provides a urethane foam molded product that has high thermal conductivity with minimal change to its physical properties. A simple method for producing the same is also provided. The urethane foam molded product includes a base material formed of a polyurethane foam, and a thermal conductive filler mixed in the base material and oriented to form mutual connections. The thermal conductive filler is formed of composite particles that include thermal conductive particles formed of a nonmagnetic material, and magnetic particles adhered to the surfaces of the thermal conductive particles.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: May 19, 2015
    Assignees: SUMITOMO RIKO COMPANY LIMITED, TOKAI CHEMICAL INDUSTRIAS, LTD.
    Inventors: Koji Tomiyama, Naoki Katayama, Yasuo Suzuki, Shinji Yoshida, Katsutoshi Hashimoto
  • URETHANE FOAM MOLDED PRODUCT AND METHOD FOR PRODUCING THE SAME
    Publication number: 20130001460
    Abstract: The present invention provides a urethane foam molded product that has high thermal conductivity with minimal change to its physical properties. A simple method for producing the same is also provided. The urethane foam molded product includes a base material formed of a polyurethane foam, and a thermal conductive filler mixed in the base material and oriented to form mutual connections. The thermal conductive filler is formed of composite particles that include thermal conductive particles formed of a nonmagnetic material, and magnetic particles adhered to the surfaces of the thermal conductive particles.
    Type: Application
    Filed: March 24, 2011
    Publication date: January 3, 2013
    Applicants: TOKAI CHEMICAL INDUSTRIES, LTD., TOKAI RUBBER INDUSTRIES, LTD.
    Inventors: Koji Tomiyama, Naoki Kitayama, Yasuo Suzuki, Shinji Yoshida, Katsutoshi Hashimoto
  • Electret microphone
    Patent number: 4236051
    Abstract: In an electret microphone in which an impedance conversion element housing chamber for an impedance conversion element is provided on the side opposite from an electret diaphragm with respect to a back electrode in a capsule, an isolating metal plate is disposed in the impedance conversion element housing chamber in spaced relation to the back electrode to define between the isolating metal plate and the back electrode an air compartment which is pneumatically isolated from the impedance conversion element chamber.
    Type: Grant
    Filed: February 16, 1979
    Date of Patent: November 25, 1980
    Assignee: Hoshidenki-Seizo Kabushiki Kaisha
    Inventors: Sadayoshi Nakagawa, Mitsuharu Shinohara, Katsutoshi Hashimoto