Patents by Inventor Makoto Ohtsuki

Makoto Ohtsuki 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).

  • Portable hard disk drive
    Patent number: D358138
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: May 9, 1995
    Assignee: International Business Machines Corporation
    Inventors: Ichiroh Koyanagi, Yoshiyuki Manabe, Makoto Ohtsuki, Hisashi Shima