Patents by Inventor Masamichi Sakauchi

Masamichi Sakauchi 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).

  • Magnet for motor of magnetic storage device
    Patent number: 10916269
    Abstract: Disclosed here is a magnet for use in a motor. The magnet comprises a magnet body. The magnet body comprises a plurality of coated magnetic granules. Each coated magnetic granule of the plurality of coated magnetic granules comprises a magnetic granule and a metallic layer coating the magnetic granule.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: February 9, 2021
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Toshio Takahashi, Kazushi Tsuwako, Masamichi Sakauchi, Takako Hayakawa, Kouki Uefune
  • MAGNET FOR MOTOR OF MAGNETIC STORAGE DEVICE
    Publication number: 20200265868
    Abstract: Disclosed here is a magnet comprising a magnet body. The magnet body comprises a plurality of coated magnetic granules.
    Type: Application
    Filed: August 28, 2019
    Publication date: August 20, 2020
    Inventors: Toshio Takahashi, Kazushi Tsuwako, Masamichi Sakauchi, Takako Hayakawa, Kouki Uefune
  • Method and apparatus for prevention of Fe contamination with oxygen mixture in a hard disk drive
    Patent number: 8885287
    Abstract: A disk drive for storing information representing data includes a base, a spindle rotatably attached to the base, and a plurality of disks having magnetizable disk surfaces attached to the spindle. The disk drive also includes a plurality of read/write transducers for writing to and reading from the plurality of magnetizable disk surfaces, and a cover attached to the base. The cover and base form a substantially sealed disk enclosure. The disk enclosure is substantially filled with a mixture of gases including an oxygen portion in the range of 0.1-3% of the mixture, and a low-density gas portion.
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: November 11, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Minoru Koike, Masamichi Sakauchi, Koichi Suzuki, Kazushi Tsuwako