Patents by Inventor Torahiko Ando

Torahiko Ando 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).

  • Field-effect transistor
    Patent number: 5107308
    Abstract: A film of a first .pi.-conjugated polymer is used as at least one of the source and the drain of a field-effect transistor, and a film of a second .pi.-conjugated polymer which differs from the first .pi.-conjugated polymer is used as a semiconductor layer in the field-effect transistor.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: April 21, 1992
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroshi Koezuka, Akira Tsumura, Torahiko Ando