Patents by Inventor Masahito Tasaka

Masahito Tasaka 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).

  • Process for producing heat sink having good heat dissipating characteristics
    Patent number: 5794607
    Abstract: A heat sink comprising a bottom plate and a plurality of fin groups on the bottom plate is disclosed, the plurality of the groups being spaced from one another, and aligned in a matrix form or arranged in a staggered pattern, and each of the group comprising a plurality of plane parallel plates or pins that are integral with the bottom plate.
    Type: Grant
    Filed: March 24, 1994
    Date of Patent: August 18, 1998
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Toshio Aihara, Masahito Tasaka, Chihiro Hayashi
  • Heat sink having good heat dissipating characteristics
    Patent number: 5726495
    Abstract: A heat sink comprising a bottom plate and a plurality of fin groups on the bottom plate is disclosed, the plurality of the groups being spaced from one another, and aligned in a matrix form or arranged in a staggered pattern, and each of the group comprising a plurality of plane parallel plates or pins that are integral with the bottom plate.
    Type: Grant
    Filed: March 9, 1993
    Date of Patent: March 10, 1998
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Toshio Aihara, Masahito Tasaka, Chihiro Hayashi