Patents by Inventor Ka-Wah Chow

Ka-Wah Chow 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).

  • Electronic educational multiple activity toy
    Patent number: D348283
    Type: Grant
    Filed: March 10, 1992
    Date of Patent: June 28, 1994
    Assignee: Vtech Industries, Inc.
    Inventor: Ka-Wah Chow
  • Electronic educational activity toy
    Patent number: D358421
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: May 16, 1995
    Assignee: Vtech Industries, Inc.
    Inventors: Chi Ka-Wah Chow, Frederick Lam-Tak Tsang
  • Electronic educational game housing
    Patent number: D369831
    Type: Grant
    Filed: November 25, 1994
    Date of Patent: May 14, 1996
    Assignee: Vtech Industries, Inc.
    Inventors: Ka-Wah Chow, Pui-Chung Lau
  • Infant activity gymnasium unit
    Patent number: D374691
    Type: Grant
    Filed: November 25, 1994
    Date of Patent: October 15, 1996
    Assignee: VTECH Industries, Inc.
    Inventors: Ka-Wah Chow, Pui-Chung Lau
  • Electronic educational game housing
    Patent number: D380231
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: June 24, 1997
    Assignee: VTech Industries, Inc.
    Inventor: Ka Wah Chow
  • Infant activity gymnasium unit
    Patent number: D387814
    Type: Grant
    Filed: May 31, 1996
    Date of Patent: December 16, 1997
    Assignee: Vtech Industries, L.L.C.
    Inventors: Ka-Wah Chow, Pui-Chung Lau