Patents by Inventor Shinichi Sumimura

Shinichi Sumimura 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).

  • Patent number: 5922426
    Abstract: The present invention provides a paper feed roll adapted for office machines which exhibits a high friction coefficient suitable for the conveyance of copying paper, printing paper, original, etc. and less abrasion. A process for the preparation of such a paper feed roll is also provided. Further, a silicone rubber composition suitable for the foregoing paper feed roll having an excellent formability to roll is provided. In particular, a novel silicone rubber-coated paper feed roll is provided, which is prepared from a silica-containing silicone rubber composition. The silicone rubber obtained by curing the silica-containing silicone rubber composition and composes the paper feed roll has an impact resilience of not less than 80% after curing as determined by JIS K6301, a permanent compression set of not more than 4% under a condition of 25% compression at 70.degree. C. for 22 hours and a 100% modulus of from 0.3 to 1.0 MPa.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: July 13, 1999
    Assignees: Fuji Xerox Co., Ltd., Kinjo Rubber Co., Ltd., Dow Corning Toray Silicone Co., Ltd.
    Inventors: Eiichi Nagatsuka, Shinichi Ogawa, Shigeo Kawachi, Tooru Kataoka, Masaru Kamei, Shinichi Sumimura, Kazuo Higuchi
  • Patent number: 4273697
    Abstract: A curable liquid composition containing a liquid polyorganosiloxane and carbon black whose specific surface area is at least 900 m.sup.2 /g and which are hollow-shell-shaped particles cures to a product having excellent electrical conductivity.
    Type: Grant
    Filed: February 19, 1980
    Date of Patent: June 16, 1981
    Assignee: Toray Silicone Company, Ltd.
    Inventors: Shinichi Sumimura, Koji Shimuzu
  • Patent number: 4156674
    Abstract: What is disclosed is a room-temperature vulcanizing flame-resistant silicone rubber composition which has triazole compounds added to it to enhance the self-extinguishing character of the flame resistant rubber.
    Type: Grant
    Filed: June 21, 1978
    Date of Patent: May 29, 1979
    Assignee: Toray Silicone Company, Ltd.
    Inventor: Shinichi Sumimura
  • Patent number: 4033924
    Abstract: There is disclosed heat curable organopolysiloxane compositions which contain adhesion additives which are organosilicon compounds which contain an epoxy functional group and at least one alkyl group or low molecular weight alkenyl group or hydrogen atom bound to silicon.
    Type: Grant
    Filed: October 26, 1976
    Date of Patent: July 5, 1977
    Assignee: Toray Silicone Company, Ltd.
    Inventors: Katsutoshi Mine, Minoru Nishio, Shinichi Sumimura