Patents by Inventor Michiko Endoh

Michiko Endoh 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).

  • Barber-pole magnetoresistive magnetic field sensor
    Patent number: 5055786
    Abstract: A magnetic field sensor for an acceleration sensor including a cantilever beam having a free end to which a permanent magnet is attached. A pair of the magnetic sensors, each consisting of a barber-pole type magnetoresistive sensing element, are arranged opposite to and symmetrically. The cantilever is bent and the magnet is moved according to an acceleration, which is detected as outputs from the magnetoresistive sensing elements.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: October 8, 1991
    Assignee: Fujitsu Limited
    Inventors: Noboru Wakatsuki, Shigemi Kurashima, Nobuyoshi Shimizu, Michiko Endoh, Akira Tanaka
  • Sensing device utilizing magneto electric transducers
    Patent number: 5049809
    Abstract: A sensing device for measuring electric current and electric power including a plurality of magneto-electric transducers for detecting a magnetic field about a conductor carrying the electric current. The magneto-electric transducers can include Barber-Pole type elements, each element being positioned on a substrate at approximately the same distance from the central point of a substrate.
    Type: Grant
    Filed: April 11, 1988
    Date of Patent: September 17, 1991
    Assignee: Fujitsu Limited
    Inventors: Noboru Wakatsuki, Shigemi Kurashima, Nobuyoshi Shimizu, Michiko Endoh, Yuji Kojima, Akira Tanaka, Hideaki Yoda
  • Acceleration sensor
    Patent number: 4967598
    Abstract: An acceleration sensor including a cantilever beam having a free end to which a permanent magnet is attached. A pair of magnetic sensors, each comprising a barber-pole type magnetoresistive sensing element, is arranged in symmetrically spaced and opposed relationship and in a common plane extending parallel to the magnetic flux of the permanent magnet with respect to respective, opposite sides of the magnet. The cantilever is bent and the magnet is moved accordingly in response to an acceleration force, which is detected as outputs from the magnetoresistive sensing elements.
    Type: Grant
    Filed: August 18, 1988
    Date of Patent: November 6, 1990
    Assignee: Fujitsu Limited
    Inventors: Noboru Wakatsuki, Shigemi Kurashima, Nobuyoshi Shimizu, Michiko Endoh, Akira Tanaka