Patents by Inventor Ken-ich Takita

Ken-ich Takita 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).

  • Foamable silicone composition, silicone sponge, and silicone sponge roll
    Patent number: 5120385
    Abstract: A process for preparing a silicone sponge roll, which comprises uniformly mixing a foamable silicone composition comprising (A) a vinyl-free organopolysiloxane R.sub.a SiO.sub.(4-a)/2 wherein R is a monovalent hydrocarbon or hydroxyl group and a is 1.95 to 2.05, (B) a finely divided silica filler, (C) an azodicarbonamide foaming agent, and (D) a diacyl peroxide, thereafter extruding the composition through an extruder, and thereafter foaming and vulcanizing the composition. The silicon sponge roll produced is suitable to form a fixing roll for use in electrographic copying machines.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: June 9, 1992
    Assignee: Shin Etsu Chemical Company, Ltd.
    Inventors: Masaharu Takahashi, Jun Hatakeyama, Ken-ich Takita