Patents by Inventor Yuji Koike

Yuji 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: 4062179
    Abstract: A switching mechanism for an electronic timepiece including a winding shaft having a square portion, a cam member mounted on the square portion, and a spring having a slit. The cam member is disposed extending into the slip whereby movement of said winding shaft is restricted in the axial direction. The cam includes peripheral projections which extend into the slit to define angular positions at which the spring maintains the cam fixed.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: December 13, 1977
    Assignee: Kabushiki Kaisha Daini Seikosha
    Inventor: Yuji Koike
  • Patent number: 4017155
    Abstract: A liquid crystal display device includes a display panel comprised of upper and lower transparent plates having a liquid crystal material sandwiched therebetween. A reflecting plate having a roughened upper surface is disposed beneath the lower transparent plate with the roughened surface facing the lower transparent plate. A light source is located alongside one side edge of the reflecting plate and coacts with a light-reflecting hood which encases the display panel, light source and reflecting plate to direct the light emitted from the light source throughout all portions of the display panel. By locating the light source along the side of the reflecting plate and by employing the light reflecting hood, the resultant liquid crystal display device may be made very thin and therefore suitable for use in wrist watches.
    Type: Grant
    Filed: September 6, 1974
    Date of Patent: April 12, 1977
    Assignee: Kabushiki Kaisha Daini Seikosha
    Inventors: Kenjiro Yagi, Yuji Koike, Hirotomo Hirai