Patents by Inventor Satomi Matsui

Satomi Matsui 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 the determination of a trace amount of an analyte substance or organism
    Patent number: 5674696
    Abstract: There is disclosed an apparatus for the determination of a trace amount of an analyte substance or organism. A substrate solution is brought into contact with a small diameter tube which has captured, at least on its inner surface, a trace amount of an analyte substance or organism. The trace amount has the ability to change the pH of the substrate solution.
    Type: Grant
    Filed: October 24, 1994
    Date of Patent: October 7, 1997
    Assignee: Biosensor Laboratories Co., Ltd.
    Inventors: Michihiro Nakamura, Satomi Matsui, Keiko Oka, Hitoshi Tsuruta
  • Method for assaying urease
    Patent number: 5556760
    Abstract: A method for assaying an enzyme on a targeted solid body surface, including the steps of contacting an end opening of a thin tube with a targeted solid body surface to form a space between the targeted solid body surface and inner wall surface of the thin tube, supplying a substrate solution into the space to bring the substrate solution in contact with the targeted solid body surface, and determining a pH change of the substrate solution in the space by using a pH electrode; and an apparatus therefor.
    Type: Grant
    Filed: January 31, 1995
    Date of Patent: September 17, 1996
    Assignee: Biosensor Research Laboratories Co., Ltd.
    Inventors: Michihiro Nakamura, Satomi Matsui, Keiko Oka, Hitoshi Tsuruta, Yoshihiro Koori, Takuji Kato, Shigeji Ito