Patents by Inventor Syuji Takamatsu

Syuji Takamatsu 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 PH sensor and circuit and method of making same
    Patent number: 5814280
    Abstract: A pH sensor having an ISFET is provided on a crystalline substrate of silicon with a thin film of aluminum oxide formed to have epitaxial growth with an overlaying thin film of silicon epitaxial grown on the aluminum oxide layer. A source element and a drain element are provided on the silicon film, and a pH responsive film layer is connected to the source and drain. The pH sensor can be accompanied with appropriate circuitry also integrally formed on the same epitaxial SOI substrate.
    Type: Grant
    Filed: November 21, 1996
    Date of Patent: September 29, 1998
    Assignee: Horiba, Ltd
    Inventors: Katsuhiko Tomita, Tsuyoshi Nakanishi, Syuji Takamatsu, Satoshi Nomura, Hiroki Tanabe