Patents by Inventor Shinichi Sekine

Shinichi Sekine 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).

  • Protection device in an integrated circuit
    Patent number: 4710791
    Abstract: An I/O protection device which protects the IC from noise especially from static charge break down is disclosed. A resistance body made from polysilicon is provided between the I/O pad and I/O circuit of the IC. The resistance body may be formed over the gate oxide or field oxide layer. Beneath the resistance body is formed a diffusion region having an opposite conductivity type to that of the substrate. The diffusion region is connected electrically in parallel to the resistance body. In some cases, the diffusion region may be connected at only one point.
    Type: Grant
    Filed: July 30, 1985
    Date of Patent: December 1, 1987
    Assignee: Fujitsu Limited
    Inventors: Takehide Shirato, Shinichi Sekine