Patents by Inventor Shunichroh Ota

Shunichroh Ota 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).

  • Method for manufacturing an enclosed disk drive
    Patent number: 6000121
    Abstract: The inside wall of a head/disk enclosure is given a surface broad enough to adsorb and release easily a large amount of water vapor. In a first embodiment, the inside surface is treated by anodic oxidation using oxalic acid. In a second embodiment, the inside surface is treated with sodium carbonate and sodium chromate. In a third embodiment, the surface was etched with acid. The water adsorption capability acts as a buffer to is prevent extremes of relative humidity within the enclosure.
    Type: Grant
    Filed: May 22, 1995
    Date of Patent: December 14, 1999
    Assignee: International Business Machines Corporation
    Inventors: Kenji Kuroki, Yoshinao Harada, Shunichroh Ota
  • Apparatus for controlling humidity in a disk drive enclosure
    Patent number: 5650890
    Abstract: The inside wall of a head/disk enclosure is given a surface broad enough to adsorb and release easily a large amount of water vapor. In a first embodiment, the inside surface is treated by anodic oxidation using oxalic acid. In a second embodiment, the inside surface is treated with sodium carbonate and sodium chromate. In a third embodiment, the surface was etched with acid. The water adsorption capability acts as a buffer to prevent extremes of relative humidity within the enclosure.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: July 22, 1997
    Assignee: International Business Machines Corporation
    Inventors: Kenji Kuroki, Yoshinao Harada, Shunichroh Ota