Patents by Inventor Tamotsu Koike

Tamotsu Koike 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: 6036326
    Abstract: A resinous member with a character visually arranged therein, including a resinous body, a character formed by a laser beam machining on a surface of the body, and a light transmittable coating arranged on the surface of the body for covering at least the character. The light transmittable coating is provided with a generally uniform thickness to form a roughened outer surface substantially corresponding to a machined surface of the character. The light transmittable coating may be formed through a spray coating process. The resinous member may be used as a key top member of a key in a keyboard of an electronic machine. The key top member comprises a resinous body, a character arranged on a surface of the body, and optical means arranged in association with the character for highlighting the character in an optical manner using an external light. The optical means may comprise a phosphorescent or fluorescent member.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: March 14, 2000
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Hiroshi Yoshikawa, Tsutomu Takahashi, Tamotsu Koike
  • Patent number: 5813521
    Abstract: A keyswitch includes a keytop, a base, an elastic actuator between the keytop and the base, a switch actuated by the actuator, and a link mechanism disposed between the base and the keytop, the link mechanism including first and second link members engaged with each other mechanically at respective first ends thereof, wherein the first and second link members further establish a slide engagement with a rear surface of the keytop at respective second ends thereof.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: September 29, 1998
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Tamotsu Koike, Syuji Nakamura, Junichi Maruyama, Norio Endo, Yasuo Ootani
  • Patent number: 5657860
    Abstract: A keyswitch includes a keytop, a base, an elastic actuator between the keytop and the base, a switch actuated by the actuator, and a link mechanism disposed between the base and the keytop, the link mechanism including first and second link members engaged with each other mechanically at respective first ends thereof, wherein the first and second link members further establish a slide engagement with a rear surface of the keytop at respective second ends thereof.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: August 19, 1997
    Assignee: Fujitsu Takamisawa Component Limited
    Inventors: Tamotsu Koike, Syuji Nakamura, Jun-ichi Maruyama, Norio Endo