Patents by Inventor Shigenori Tanaga

Shigenori Tanaga 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: 4847586
    Abstract: There provided is a pressure detector accurate in operation and high in reproducibility to have a resistance circuit substrate provided with at least one pair of electrodes and forming a resistance circuit between the electrodes through printing or other means, a block contact maker formed of a conductive elastic material to a shape ready for deforming, which is characterized in that the block contact maker is kept in contact with the resistance circuit substrate at all times, the block contact maker is deformed according as the state shifts from non-pressurized to pressurized to change a contact area gradually with the resistance circuit substrate, thus forming a variable resistance circuit parallel electrically with the resistance circuit substrate.
    Type: Grant
    Filed: November 23, 1987
    Date of Patent: July 11, 1989
    Assignee: Kokoku Rubber Industry Company Limited
    Inventors: Shigenori Tanaga, Hideo Iida