Patents by Inventor Mayumi Kazuta

Mayumi Kazuta 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).

  • Apparatus for measuring quantity of hydrogen
    Patent number: 6155099
    Abstract: A sensor is constituted by joining a pair of electrodes to a sensor body formed by binding hydrogen occluding metal with binders. Change in the electric resistance between the electrodes and the quantity of hydrogen occluded by the hydrogen occluding metal in the sensor body has a one to one relationship. Therefore, the quantity of hydrogen occluded by the hydrogen occluding metal can be estimated from the resistance value obtained by the sensor.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: December 5, 2000
    Assignee: Kabushiki Kaisha Equos Research
    Inventors: Masafumi Kobayashi, Mayumi Kazuta
  • Measuring concentrations of plural target substances by use of diamond electrode
    Patent number: 6106692
    Abstract: There is provided a concentration sensor for measurement of concentrations of one or plural target substances in a system, with a detection electrode of conductive diamond. The measuring method with the concentration sensor involves measuring the reaction potentials of plural target substances in a sample containing and determining the concentrations of the plural substances by use of the difference between the resulting reaction potentials of the respective substances. The measuring method can also determine the concentration of a single substance in a sample containing one kind of target substance.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: August 22, 2000
    Assignees: Imra Japan Kabushikikaisha, Akira Fujishima, Kazuhito Hashimoto, Kohei Uosaki
    Inventors: Keiji Kunimatsu, Toshihide Nakata, Toshiya Saito, Mayumi Kazuta, Akira Fujishima, Kazuhito Hashimoto, Kohei Uosaki