Patents by Inventor Eizi Hamada

Eizi Hamada 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).

  • Clutch facing material and method for manufacturing the same
    Patent number: 4364997
    Abstract: A clutch facing material including strings of asbestos to which are applied a mixture of cashew dust resin and graphite which is in turn mixed with cashew dust. The graphite is inseparably contained in the mixture of cashew dust resin and graphite and, in combination with the cashew dust, provides a clutch facing material showing a high frictional coefficient even at high temperatures.
    Type: Grant
    Filed: May 19, 1981
    Date of Patent: December 21, 1982
    Assignees: Aisin Seiki Kabushiki Kaisha, Aisin Kako Kabushiki Kaisha
    Inventors: Yasunobu Yamamoto, Toshiaki Sakabe, Eizi Hamada