Patents by Inventor Kiyotaka Sawa

Kiyotaka Sawa 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).

  • Cured silicone powder and method of preparation
    Patent number: 5840831
    Abstract: A cured silicone powder inhibited from evolving unpleasant odors with the passage of time, and an efficient method for preparation of the cured silicone powder, in which the surface of the cured silicone powder is treated with an alkali, by dipping the cured silicone powder in an aqueous alkaline solution.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: November 24, 1998
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Tadashi Hamachi, Kazuo Kobayashi, Yoshitsugu Morita, Kiyotaka Sawa, Ryuji Tachibana
  • Silicone grease composition and method for preparing same
    Patent number: 5227081
    Abstract: Silicone grease compositions are prepared by blending a thickening agent with a liquified crosslinked organosiloxane gel produced using a platinum-catalyzed hydrosilylation reaction. The gel is liquified by application of a shearing force to the crosslinked gel. The shearing force can be applied prior to and/or during blending of the gel with the thickener.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: July 13, 1993
    Assignee: Dow Corning Toray Silicone Co., Ltd.
    Inventors: Kiyotaka Sawa, Yasushi Sugiura, Osamu Tanaka