Patents by Inventor Tetsuo Arai

Tetsuo Arai 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).

  • Fuel cell
    Patent number: 4225654
    Abstract: By utilizing in a multi-layered fuel cell, plastic separators with the inter-cell connectors supported in resilient but vaportight fashion within the separators, a lighweight fuel cell may be realized which does not suffer from fuel-oxidizer leakage despite temperature rises and accompanying differential component expansion.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: September 30, 1980
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Hiroyuki Tajima, Tetsuo Arai