Patents by Inventor Keiji Nagatsu

Keiji Nagatsu 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: 5220305
    Abstract: A semiconductor pressure sensor chip has a pattern including first diffusion sections in which external connection contacts are formed. Resistors are connected to the first diffusion sections through second diffusion sections in a bridge circuit such that the distances between a contact and the second diffusion sections connected to a first diffusion section where the contact is disposed are equal. This arrangement reduces drift of the offset voltage with changes in temperature, thus providing a high precision semiconductor pressure sensor with an improved yield.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: June 15, 1993
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Keiji Nagatsu, Michihiro Mizuno