Patents by Inventor Toshikatsu Hama

Toshikatsu Hama 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: 6930891
    Abstract: An electromagnetic shielding plate having high shielding effect is provided. The electromagnetic shielding plate is formed of a conductive plate having elasticity and is provided on the edge thereof with a connecting strip bent in such a manner that the tip thereof projects from the surface of the plate, and with a supporting portion. When the electromagnetic shielding plate and the printed substrate are connected, it is ensured that the ground pattern 201 of the printed board 200 and the connecting strip are brought into contact with respect to each other, thereby a high shielding effect can be obtained.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: August 16, 2005
    Assignee: Sony Computer Entertainment Inc.
    Inventors: Toshikatsu Hama, Osamu Murasawa
  • Patent number: 6742573
    Abstract: A heat sink including a heat dissipating fin comprises (1) a heat dissipating fin having a plurality of mountain-shaped portions and base portions supporting the mountain-shaped portions, (2) a base member having a plurality of slits into which the mountain-shaped portions of the heat dissipating fin are to be inserted and a plurality of holes for fixing the heat dissipating fin, and (3) a fitting member, provided with a plurality of projecting portions corresponding to the plurality of holes of the base member, for fixing the heat dissipating fin between the base member and the fitting member itself.
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: June 1, 2004
    Assignees: The Furukawa Electric Co., Ltd., Sony Computer Entertainment, Inc.
    Inventors: Chiyoshi Sasaki, Junji Sotani, Masaru Ohmi, Toshikatsu Hama, Yasuhiro Ootori
  • Publication number: 20020084060
    Abstract: A heat sink including a heat dissipating fin comprises (1) a heat dissipating fin having a plurality of mountain-shaped portions and base portions supporting the mountain-shaped portions, (2) a base member having a plurality of slits into which the mountain-shaped portions of the heat dissipating fin are to be inserted and a plurality of holes for fixing the heat dissipating fin, and (3) a fitting member, provided with a plurality of projecting portions corresponding to the plurality of holes of the base member, for fixing the heat dissipating fin between the base member and the fitting member itself.
    Type: Application
    Filed: December 4, 2001
    Publication date: July 4, 2002
    Inventors: Chiyoshi Sasaki, Junji Sotani, Masaru Ohmi, Toshikatsu Hama, Yasuhiro Ootori
  • Patent number: 6357514
    Abstract: A heat sink including a heat dissipating fin comprises (1) a heat dissipating fin having a plurality of mountain-shaped portions and base portions supporting the mountain-shaped portions, (2) a base member having a plurality of slits into which the mountain-shaped portions of the heat dissipating fin are to be inserted and a plurality of holes for fixing the heat dissipating fin, and (3) a fitting member, provided with a plurality of projecting portions corresponding to the plurality of holes of the base member, for fixing the heat dissipating fin between the base member and the fitting member itself.
    Type: Grant
    Filed: August 18, 2000
    Date of Patent: March 19, 2002
    Assignees: The Furukawa Electric Co. Ltd., Sony Computer Entertainment, Inc.
    Inventors: Chiyoshi Sasaki, Junji Sotani, Masaru Ohmi, Toshikatsu Hama, Yasuhiro Ootori