Patents by Inventor Yukinaru Nakamura

Yukinaru Nakamura 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).

  • Polytetrafluoroethylene molding powder
    Patent number: 5709944
    Abstract: Polytetrafluoroethylene molding powder which comprises 0.01 to 1% by weight of a perfluoro(vinyl ether) unit and which has a heat of crystallization of 18.0 to 25.0 J/g. The molding powder provides a molded article which has a flex life of not less than 7 million cycles, a creep resistance (total deformation at 200.degree. C.) of not more than 20%, and a creep resistance (total deformation at 25.degree. C.) of not more than 15%. The polytetrafluoroethylene molding powder which is excellent in both creep resistance and flex fatigue resistance is provided as a molding material for parts which are repeatedly bent such as pump.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 20, 1998
    Assignee: Daikin Industries, Ltd.
    Inventors: Masuo Kokumai, Yukinaru Nakamura, Mitsuru Kishine, Tetsuo Kitahaba, Hirokazu Yukawa, Kazuhide Sawada, Sang Bong Han, Tetsuo Shimizu, Takahisa Aoyama