Patents by Inventor Kinji Tsuboi

Kinji Tsuboi 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).

  • Patent number: 4883949
    Abstract: When an induction coil which is supplied with an alternating current to output an induction current is moved along patterns formed on a data recording sheet, the magnitude of induction current generated in the induction coil changes in accordance with changes in the patterns. The change in the magnitude of the induction current is detected by a read device to thereby read information contained in the data recording sheet.
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: November 28, 1989
    Assignees: Tokyu Car Corporation, Hiroshi Kokubo
    Inventors: Hiroshi Kokubo, Kinji Tsuboi