Patents by Inventor Iwao Yamasaki

Iwao Yamasaki 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).

  • Transistor device
    Patent number: 4339765
    Abstract: A lateral type multi-collector transistor which has a first collector region which subtends an angle .theta..sub.1 at the center of the emitter region and which has an effective plane distance W.sub.B1 from this center; and a second collector region which subtends an angle of .theta..sub.2 at the center of the emitter region and which has an effective plane distance W.sub.B2 from this center such that .theta..sub.1 <.theta..sub.2 and W.sub.Bl >W.sub.B2.
    Type: Grant
    Filed: June 4, 1980
    Date of Patent: July 13, 1982
    Assignee: Tokyo Shibaura Denki Kabushiki Kaisha
    Inventors: Junichi Nakamura, Seiji Hata, Iwao Yamasaki