Patents by Inventor Tsunemitsu Koizumi

Tsunemitsu Koizumi 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: 5641558
    Abstract: A window glass for an automobile, wherein a surface of a single sheet of glass is provided with a dark-colored film, or wherein a window glass laminated with at least a single sheet of glass and at least a single sheet of a synthetic resin film is provided with the dark-colored film on a surface of the window glass or on an interface between the glass and the synthetic resin film characterized by that a first visible light transmittance of an emitted light transmitting portion of the window glass through which a light of an alarm lamp substantially transmits is larger than a second visible light transmittance of a dark-colored portion of the window glass formed with the dark-colored film.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: June 24, 1997
    Assignee: Asahi Glass Company Ltd.
    Inventors: Kazuyoshi Noda, Tsunemitsu Koizumi, Kouichi Osada, Hisashi Nishiyama, Yasushi Takemasa
  • Patent number: 5051652
    Abstract: A panel with an anti-reflective multi-layered film thereon comprises a glass substrate, an electricity collector for leading static electricity which is formed by baking an electric conductive frit paste on the glass substrate, and has a rough surface, an anti-reflective multi-layered film formed on the glass substrate so as to cover at least a portion of the electricity collector and wherein the film includes an inner electric conductive layer to provide antistatic effect, wherein the thickness of the anti-reflective multi-layered film is less than the maximum height of the surface roughness of the electricity collector, and a lead terminal for earth provided on the outermost layer of the anti-reflective film and above the electricity collector, whereby static electricity produced on the glass substrate with the anti-reflective multi-layered film is collected at the electricity collector through the electric conductive layer so that the static electricity is led to the outside through the lead terminal for e
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: September 24, 1991
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Toshiaki Isomura, Tsunemitsu Koizumi