Patents by Inventor Yuko Koguchi

Yuko Koguchi 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).

  • Fluxmeter including squid and pickup coil with flux guiding core and method for sensing degree of deterioration of an object
    Patent number: 5414356
    Abstract: A fluxmeter includes an application unit for applying a magnetic field, a superconducting quantum interference element and a flux transmitting circuit. The flux transmitting circuit includes a pickup coil formed of a superconducting print coil and a core for the pickup coil. The core is formed of a soft magnetic material. The core serves to suppress the leakage of magnetic flux to magnetically couple the pickup coil and the superconducting quantum interference element efficiently to improve the sensitivity and resolution of the fluxmeter. The pickup coil may be manufactured by photolithography, sputtering, laser beam deposition, MBE deposition, MOCVD or spray pyrolysis.
    Type: Grant
    Filed: July 30, 1991
    Date of Patent: May 9, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Toshihiko Yoshimura, Tasuku Shimizu, Yuichi Ishikawa, Masahiro Otaka, Yuko Koguchi, Kunio Enomoto, Kunio Hasegawa, Makoto Hayashi, Kazuo Takaku