Patents by Inventor Toshiyuki Hosohara

Toshiyuki Hosohara 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).

  • Diaphragm and fabrication method thereof
    Patent number: 4720079
    Abstract: A diaphragm is formed of a valve member made of a peroxide-curable fluorine-contained rubber and a deformable member made of a fluorosilicone rubber and bonded integrally with the valve member owing to simultaneous curing thereof. It may be fabricated by placing a peroxide-curable fluorine-contained rubber material and a fluorosilicone rubber material in a mold; and then heating and molding the materials simultaneously, thereby bonding the resulting valve member and deformable member into an integral part. A rigid plate may be embedded between the valve member and deformable member. The diaphragm enjoys a low fabrication cost and assures good airtightness without failure.
    Type: Grant
    Filed: November 5, 1984
    Date of Patent: January 19, 1988
    Assignee: Fuji Polymer Industries Co., Ltd.
    Inventors: Naomichi Iizuka, Motoyuki Suzuki, Toshiyuki Hosohara