Patents by Inventor Tadato Suzuki

Tadato Suzuki 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).

  • Information card system communicable in contactless manner
    Patent number: 5015834
    Abstract: An information card system according to the present invention establishes a data communication between a terminal unit and an information card after receipt of an acknowledge signal supplied from the information card to the terminal unit, and the acknowledge signal is produced by a combination of a periodical signal retrieving circuit and an output unit incorporated in the information card upon receiving a periodical signal fed from the terminal unit, so that a misfit between the information card and the terminal unit is detectable before the data communication.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: May 14, 1991
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Tadato Suzuki, Yoshikazu Yorimoto, Hidekazu Matsumura, Seiji Hirano