Patents by Inventor Wong Wai Kei

Wong Wai Kei 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).

  • Wrist watch
    Patent number: D580280
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: November 11, 2008
    Assignee: Citizen Tokei Kabushiki Kaisha
    Inventors: Takayuki Takahashi, Wong Wai Kei
  • Wrist watch
    Patent number: D658509
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 1, 2012
    Assignees: Citizen Holdings Co., Ltd., Citizen Watch Co., Ltd
    Inventor: Wong Wai Kei
  • Wrist watch case with band
    Patent number: D658510
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 1, 2012
    Assignees: Citizen Holdings Co., Ltd., Citizen Watch Co., Ltd.
    Inventor: Wong Wai Kei
  • Wrist watch
    Patent number: D658511
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: May 1, 2012
    Assignees: Citizen Holdings Co., Ltd., Citizen Watch Co., Ltd.
    Inventor: Wong Wai Kei