Patents by Inventor Hirotoshi Equchi

Hirotoshi Equchi 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).

  • Force detecting device
    Patent number: 4849730
    Abstract: A force detecting device includes an insulative strain element, strain sensors, and leads. The insulative strain element is electrically insulative at least at its surface. The strain sensors are formed of a piezoresistive thin film and deposited as a piezoresistive thin film pattern on the surface of the insulative strain element integrally therewith. The leads are formed of a highly conductive thin film and deposited as a highly conductive thin film pattern on the surface of the insulative strain element integrally therewith.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: July 18, 1989
    Assignee: Ricoh Company, Ltd.
    Inventors: Kouji Izumi, Masanori Itagaki, Eiichi Ohta, Hiroyuki Okamoto, Masumitsu Ino, Hirotoshi Equchi