Patents by Inventor Tadahisa Ishiwata

Tadahisa Ishiwata 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).

  • Disk array device and disk array device housing
    Patent number: 7424727
    Abstract: The disk array device (100) comprises at least one object of cooling that includes at least one of a plurality of disk type storage devices (150), and cooling parts (31U, 31L) that cool said object of cooling indirectly by means of a cooling medium.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: September 9, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Shigeaki Tanaka, Yasuji Morishita, Tadahisa Ishiwata
  • Disk array device and disk array device housing
    Publication number: 20060123436
    Abstract: The disk array device (100) comprises at least one object of cooling that includes at least one of a plurality of disk type storage devices (150), and cooling parts (31U, 31L) that cool said object of cooling indirectly by means of a cooling medium.
    Type: Application
    Filed: January 25, 2005
    Publication date: June 8, 2006
    Applicant: Hitachi, Ltd.
    Inventors: Shigeaki Tanaka, Yasuji Morishita, Tadahisa Ishiwata
  • Magnetic disc storage unit for electronic computer
    Patent number: D417202
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: November 30, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Kiyotaka Izawa, Takashi Yamamoto, Toshiyuki Utsuki, Masanori Hori, Tadahisa Ishiwata