Patents by Inventor Sadao Shimura

Sadao Shimura 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).

  • Rotary magnetic head inspection method
    Patent number: 5966279
    Abstract: A rotary magnetic head inspection method for a double azimuth head where two magnetic heads of different azimuthal angles are arranged on a head base, includes the steps of: recording an inspection signal on a running tape by a magnetic head; reproducing the inspection signal by the magnetic head for checking the level of the reproducing signal; and reproducing the inspection signal by the other magnetic head for checking whether the magnetic head is correctly assembled onto a head base through judgement of the reproducing signal.
    Type: Grant
    Filed: October 29, 1996
    Date of Patent: October 12, 1999
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Sadao Shimura, Tadashi Adachi