Patents by Inventor Katsuhiko Ibuki

Katsuhiko Ibuki 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).

  • Interphone
    Patent number: D620917
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: August 3, 2010
    Assignee: Aiphone Co., Ltd.
    Inventors: Akihiro Hattori, Katsuhiko Ibuki
  • Interphone
    Patent number: D624522
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: September 28, 2010
    Assignee: Aiphone Co., Ltd.
    Inventors: Koutarou Takahata, Katsuhiko Ibuki
  • Interphone
    Patent number: D624523
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: September 28, 2010
    Assignee: Aiphone Co., Ltd.
    Inventors: Koutarou Takahata, Katsuhiko Ibuki
  • Interphone
    Patent number: D686184
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: July 16, 2013
    Assignee: Aiphone Co., Ltd.
    Inventors: Kotaro Takahata, Katsuhiko Ibuki