Patents by Inventor Tatsushi Aoki

Tatsushi Aoki 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).

  • Patent number: 7280306
    Abstract: Embodiments of the invention provide a manufacturing method for a disk drive which allows highly accurate recording of servo data without substituting the internal gas of the disk drive, and such a magnetic disk drive and servo track writer. In one embodiment, a disk, a magnetic head slider with a head for writing data onto and reading out data from the disk, a suspension for retaining the magnetic head slider, an arm for supporting the suspension, and a driving section for driving the arm are stored into an enclosure. When a servo track write operation is conducted, the enclosure interior is depressurized to an atmospheric pressure lower than normal pressure and then servo data is recorded on the disk.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: October 9, 2007
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Hidetsugu Tanaka, Tsuyoshi Matsumoto, Atsushi Tatsugawa, Tatsushi Aoki
  • Publication number: 20060164752
    Abstract: Embodiments of the invention provide a manufacturing method for a disk drive which allows highly accurate recording of servo data without substituting the internal gas of the disk drive, and such a magnetic disk drive and servo track writer. In one embodiment, a disk, a magnetic head slider with a head for writing data onto and reading out data from the disk, a suspension for retaining the magnetic head slider, an arm for supporting the suspension, and a driving section for driving the arm are stored into an enclosure. When a servo track write operation is conducted, the enclosure interior is depressurized to an atmospheric pressure lower than normal pressure and then servo data is recorded on the disk.
    Type: Application
    Filed: January 25, 2006
    Publication date: July 27, 2006
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Hidetsugu Tanaka, Tsuyoshi Matsumoto, Atsushi Tatsugawa, Tatsushi Aoki
  • Patent number: 6424493
    Abstract: A magnetic head has a left side rail formed on a disk facing surface in a protruded manner, and a right side rail formed on the disk facing surface in a protruded manner. A cross rail formed on the disk facing surface protrudes and is elongated continuously to both the left side rail and the right side rail. A left air bearing surface is formed on the disk facing surface in a protruded manner, and formed only on a side of a leading edge continuously from the left side rail. The left air bearing surface has a continuous portion to the left side rail, and a right air bearing surface which is formed on the disk facing surface in a protruded manner, formed only on a side of the leading edge continuously from the right side rail.
    Type: Grant
    Filed: June 29, 2000
    Date of Patent: July 23, 2002
    Assignee: International Business Machines Corporation
    Inventors: Tsuyoshi Matsumoto, Takashi Nakamura, Atsushi Tobari, Tatsushi Aoki, Lee K. Dorius