Patents by Inventor Kougi Tanagawa

Kougi Tanagawa 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).

  • IC card having means for protecting erroneous operation
    Patent number: 4990760
    Abstract: An IC card having means for protecting erroneous operation. A circuit for detecting incomplete contact is provided.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: February 5, 1991
    Assignee: Oki Electric Industry Co., Ltd.
    Inventors: Nobuhiro Tomari, Kougi Tanagawa