Patents by Inventor Shigemasa Kitajima

Shigemasa Kitajima 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: 7125137
    Abstract: A surface light-emitting unit installed on a floor or wall of a structure is able to emit light from its surface for unique illumination effects. A surface light-emitting unit includes a transparent glass plate that can transmit light; a light-conducting plate installed below the glass plate; a light-emitting means having multiple light-emitting diodes of different colors and installed on the side face of the light-conducting plate; a light-diffusing/reflecting member installed below the light-conducting plate that diffuses and reflects the light; an emission-color selection means for selecting the light-emitting diode to be illuminated or blinked; a casing for providing the transparent glass plate at the top opening; a casing for installing above components; and a connection part that can be connected to other surface light-emitting unit installed adjacently.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: October 24, 2006
    Assignees: B-Sure Co. USA, Kitajima Seisakusho Co., Ltd.
    Inventors: Shigemasa Kitajima, Shinobu Takahashi, Kyosuke Ito
  • Publication number: 20040240230
    Abstract: Problems to Be Solved
    Type: Application
    Filed: May 28, 2004
    Publication date: December 2, 2004
    Inventors: Shigemasa Kitajima, Shinobu Takahashi, Kyosuke Ito