Patents by Inventor Tsutomi Kashiwagi

Tsutomi Kashiwagi 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).

  • Lens-forming silicone resin composition and silicone lens
    Patent number: 7829651
    Abstract: Silicone resin compositions comprising (A) an organopolysiloxane containing at least two aliphatic unsaturated bonds, (B) an organohydrogenpolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, (C) a platinum group metal base catalyst, and (D) a mold release agent cure into colorless, transparent, heat resistant parts which can be smoothly released from the mold and used as lenses in LED devices.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: November 9, 2010
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Toshio Shiobara, Tsutomi Kashiwagi, Katsuyuki Imazawa