Patents by Inventor Mitsuo Bitoh

Mitsuo Bitoh 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).

  • Thin film device
    Patent number: 5529831
    Abstract: A thin film device comprising a substrate which is magnetic and has insulation property at least on the surface, coils formed spirally in a planar configuration on the substrate, a first interlayer insulation film formed to a portion excepting for the terminal portion of the coils and a magnetic material connection portion of the substrate, a magnetic film and a second interlayer insulation film formed successively on the first interlayer insulation film excepting for the terminal portions, and bump electrodes formed in connection with the terminal portions in which a crystallite material having a composition: Fe.sub.78 Ta.sub.10 C.sub.12 is used as the magnetic film. The thin film device can be formed an a reduced size and having a large inductance value. When the device is used as a noise filter, a cut-off frequency range can be lowered.
    Type: Grant
    Filed: December 2, 1994
    Date of Patent: June 25, 1996
    Assignee: Alps Electric Co., Ltd.
    Inventors: Satoshi Waga, Mitsuo Bitoh, Kazunari Takida, Kenji Shimizu, Kiyoshi Sasai, Yoshihiro Sudoh, Yoshinobu Kakihara