Patents by Inventor Masahito Imai

Masahito Imai 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 accelerometer
    Patent number: 4829822
    Abstract: A semiconductor accelerometer includes a package containing damping liquid. A base is fixedly disposed within the package. A semiconductor plate is disposed within the package and is supported on the base. The semiconductor plate has a movable free end and a deformable diaphragm. A semiconductor strain gauge is associated with the diaphragm and deforms in accordance with deformation of the diaphragm. The base has a first surface opposing the semiconductor plate free end. The first surface of the base has a recess for limiting movement of the semiconductor plate free end. The recess extends to and opens at a second surface of the base which differs from the first surface.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: May 16, 1989
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masahito Imai, Toshitaka Yamada, Tiaki Mizuno, Hirohito Shioya