Patents by Inventor Tatsuhiko Yajima

Tatsuhiko Yajima 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).

  • Electrochemical sensor
    Patent number: 7179354
    Abstract: Disclosed is an electrochemical sensor comprising a work electrode and a reference electrode, said sensor adapted to measure the characteristics of a liquid under test, based on the relative electric potential difference and electric current between the work electrode and the reference electrode both immersed in the liquid under test, said work electrode comprising a substrate that reacts to the liquid under test for generating an electric potential according to the concentration of the liquid under test, and said reference electrode comprising a substrate that reacts to the liquid under test for generating a fixed electric potential. According to the present invention, at least one of the work electrode and the reference electrode comprises said substrate coated with a function film for serving to generate the electric potential through the intervention of the film between said substrate and the liquid under test.
    Type: Grant
    Filed: May 7, 2003
    Date of Patent: February 20, 2007
    Assignee: Tanita Corporation
    Inventors: Tatsuhiko Yajima, Shunichi Uchiyama, Shinichi Harima
  • Electrochemical sensor
    Publication number: 20030217919
    Abstract: Disclosed is an electrochemical sensor comprising a work electrode and a reference electrode, said sensor adapted to measure the characteristics of a liquid under test, based on the relative electric potential difference and electric current between the work electrode and the reference electrode both immersed in the liquid under test, said work electrode comprising a substrate that reacts to the liquid under test for generating an electric potential according to the concentration of the liquid under test, and said reference electrode comprising a substrate that reacts to the liquid under test for generating a fixed electric potential. According to the present invention, at least one of the work electrode and the reference electrode comprises said substrate coated with a function film for serving to generate the electric potential through the intervention of the film between said substrate and the liquid under test.
    Type: Application
    Filed: May 7, 2003
    Publication date: November 27, 2003
    Applicant: TANITA CORPORATION
    Inventors: Tatsuhiko Yajima, Shunichi Uchiyama, Shinichi Harima