Patents by Inventor Tadakazu Kawamura

Tadakazu Kawamura 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).

  • Incandescence lamp with a reinforcement rib
    Patent number: 8264133
    Abstract: An incandescence lamp comprises an arc tube where both ends form sealing portions, a filament that extends in the arc tube in a tube axis direction, and a reinforcement rib that extends along the arc tube in the tube axis direction.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: September 11, 2012
    Assignee: Ushio Denki Kabushiki Kaisha
    Inventors: Koichi Takegoshi, Kazuyuki Ikushima, Tadakazu Kawamura
  • Incandescence lamp
    Publication number: 20110241516
    Abstract: An incandescence lamp comprises an arc tube where both ends form sealing portions, a filament that extends in the arc tube in a tube axis direction, and a reinforcement rib that extends along the arc tube in the tube axis direction.
    Type: Application
    Filed: March 30, 2010
    Publication date: October 6, 2011
    Applicant: USHIO DENKI KABUSHIKI KAISHA
    Inventors: Koichi Takegoshi, Kazuyuki Ikushima, Tadakazu Kawamura