Patents by Inventor Mikio Inatsu

Mikio Inatsu 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 integrated circuit device
    Patent number: 5019889
    Abstract: In an oscillation circuit consisting of an amplification circuit portion composed of transistors of input/output circuit basic cells of a gate array disposed on a semiconductor pellet and an oscillator disposed outside the semiconductor pellet, the amplification circuit portion consists of transistors for an output circuit of the input/output buffer circuit basic cells. The dielectric breakdown characteristics of the amplification circuit portion of the oscillation circuit can be improved because the structure of the transistor for the output circuit is more highly resistant to dielectric breakdown than the structure of the transistor for the input circuit.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: May 28, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Yoshio Shintani, Mikio Inatsu