Patents by Inventor Wataru Fukai

Wataru Fukai 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).

  • Semiconductor pressure sensor
    Patent number: 5291788
    Abstract: A semiconductor pressure sensor according to the invention comprises a first semiconductor substrate and a second semiconductor substrate, disposed around the first substrate, so that signals obtained by the semiconductor pressure sensor under static or differential pressure conditions can be properly corrected and both static and differential pressures can be detected accurately and reliably measured on the same semiconductor substrates. Another object of the invention is provide a semiconductor pressure sensor which utilizes a single substrate with an aperture, which acts as a pressure overload stop mechanism, and which does not suffer from any effects of diaphragm deformation as a result of possible pressure overload.
    Type: Grant
    Filed: September 24, 1992
    Date of Patent: March 8, 1994
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Satoshi Oohata, Satoshi Yonemoto, Wataru Fukai