Patents by Inventor Masanori Wantanabe

Masanori Wantanabe 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).

  • Field effect transistor type sensor with an auxiliary electrode
    Patent number: 4849798
    Abstract: A field effect transistor-type sensor comprising a field effect transistor device incorporated with a sensitive means exhibiting electric variation due to a physical or chemical interaction with the physical quantity to be detected so that said sensitive means is disposed between a gate insulating film and a gate electrode of the transistor device, wherein an auxiliary electrode film for the application of a drift-cancellation voltage to said sensitive means is located between said gate insulating film and said sensitive means in such a manner that an extended portion of said auxiliary electrode film falls in a region over at least one part of a drain region of said transistor device.
    Type: Grant
    Filed: December 3, 1987
    Date of Patent: July 18, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Masanori Wantanabe