Patents by Inventor Tatsuo Kuwayama

Tatsuo Kuwayama 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).

  • Splashproof construction for portable type electronic device
    Patent number: 5665485
    Abstract: A splashproof construction for a portable electronic device, comprising an electronic device main unit, and a battery pack to be mounted on the electronic device main unit, whereby one of either the electronic device main unit or the battery pack has a boundary surface formed along a combined surface and a peripheral edge and with a graded step with respect to the combined surface, and a guide rail provided adjacent to the boundary surface, and the other of either the electronic device main unit or the battery pack has a peripheral wall aligned with the boundary surface and a guide groove to be slidably engaged with the guide rail, or a bottom wall of the peripheral wall has a notch abutting on a lower surface of the graded step on the boundary surface, or a water-repellent sheet is provided at the bottom of the guide groove, or a seal plate made of a highly elastic material is provided either on an end surface of the battery pack abutted on the electronic device main unit at an end point of sliding when the
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: September 9, 1997
    Assignee: Kokusai Electric Co., Ltd.
    Inventors: Tatsuo Kuwayama, Isamu Sekine, Tatsuya Okawa, Takeshi Sato, Ryuichi Takahashi
  • Portable wireless telephone
    Patent number: D380750
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: July 8, 1997
    Assignee: Kokusai Electric Co., Ltd.
    Inventors: Takeshi Sato, Akira Teto, Tatsuo Kuwayama, Osamu Utsunomiya
  • Portable wireless telephone
    Patent number: D388431
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: December 30, 1997
    Assignee: Kokusai Electric Co., Ltd.
    Inventors: Tetsufumi Takayasu, Tatsuo Kuwayama, Takao Kumakoshi, Hiroshi Fujiwara
  • Holder for portable wireless car telephone
    Patent number: D392646
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: March 24, 1998
    Assignee: Kokusai Electric Co., Ltd.
    Inventors: Tetsufumi Takayasu, Tatsuo Kuwayama, Hiroshi Fujiwara
  • Battery charger for portable wireless phone
    Patent number: D402957
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: December 22, 1998
    Assignee: Kokusai Electric Co., Ltd.
    Inventors: Tatsuo Kuwayama, Tetsufumi Takayasu, Hiroshi Fujiwara