Patents by Inventor Itsunari Hamada

Itsunari 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).

  • Semiconductor arrester
    Patent number: 5532900
    Abstract: To enable the mounting of arrester in a small-sized package of a resin-sealed type for general use, such as a T0-92 package or a T0-220 package, by modifying the arrangement of diodes and thyristor there is provided: a diode-bridge thyristor type of semiconductor arrester, comprising: a pair of opposed metal plates (20, 21); a thyristor (T1) between the metal plates (20, 21); three pairs of diodes (D1, D2: D3, D4: D5, D6) between the metal plates (20, 21); and three leads (22, 23, 24), each provided between each pair of diodes.
    Type: Grant
    Filed: February 8, 1995
    Date of Patent: July 2, 1996
    Assignee: Shinko Electric Industries Co., Ltd.
    Inventors: Min-Su Kim, Itsunari Hamada