Patents by Inventor Akinobu Sudo

Akinobu Sudo 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).

  • Magnetic material containing rare earth element, iron, nitrogen, hydrogen and oxygen and bonded magnet containing the same
    Patent number: 5164104
    Abstract: A magnetic material represented by the formulaR.sub..alpha. Fe.sub.(100-.alpha.-.beta.-.gamma.-.delta.) N.sub..beta. H.sub..gamma. O.sub..delta.whereinR is at least one rare earth element inclusive of Y;.alpha. is from 5 to 20 atomic percent,.beta. is from 5 to 25 atomic percent,.gamma. is from 0.01 to 5 atomic percent and.delta. is from 3 to 15 atomic percent.From this magnetic material, a bonded magnet can advantageously be obtained, while maintaining excellent magnetic properties of the magnetic material used for the production thereof.
    Type: Grant
    Filed: September 11, 1990
    Date of Patent: November 17, 1992
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Kurima Kobayashi, Takahiko Iriyama, Nobuyoshi Imaoka, Akinobu Sudo, Naoko Kashiwaya