Patents by Inventor Munehiro Date

Munehiro Date 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).

  • Piezoelectric and pyroelectric polymer film and process for preparing same
    Patent number: 4308370
    Abstract: A process for preparing polyvinylidene fluoride type (PVDF) films having highly stable piezoelectricity and pyroelectricity, by stretching PVDF films, while causing corona discharge, across the electric field formed by discharging, to effect thereby to polarization of film.
    Type: Grant
    Filed: April 21, 1980
    Date of Patent: December 29, 1981
    Assignees: Rikagauku Kenkyusho, Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Eiichi Fukada, Takeo Furukawa, Munehiro Date, Toshiaki Takamatsu, Ken'ichi Nakamura