Patents by Inventor Wai Keung Tse

Wai Keung Tse 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).

  • Toy vehicle
    Patent number: D443318
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: June 5, 2001
    Assignee: Wah Hing Toys Development Co., Ltd.
    Inventor: Cliff Wai Keung Tse
  • Toy vehicle
    Patent number: D445843
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: July 31, 2001
    Assignee: Wah Hing Toys Development Co., Ltd.
    Inventor: Wai Keung Tse
  • Toy vehicle
    Patent number: D445844
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: July 31, 2001
    Assignee: Wah Hing Toys Development Co., Ltd.
    Inventor: Wai Keung Tse
  • Toy vehicle
    Patent number: D445845
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: July 31, 2001
    Assignee: Wah Hing Toys Development Co., Ltd.
    Inventor: Wai Keung Tse
  • Toy motor-cycle
    Patent number: D447190
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: August 28, 2001
    Assignee: Wah Hing Toys Development Co., Ltd.
    Inventor: Wai Keung Tse
  • Toy aeroplane
    Patent number: D448814
    Type: Grant
    Filed: December 27, 2000
    Date of Patent: October 2, 2001
    Assignee: Wah Hing Toys Development Co., Ltd.
    Inventor: Wai Keung Tse
  • Toy helicopter
    Patent number: D453031
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: January 22, 2002
    Assignee: Wah Hing Toys Development Co., Ltd.
    Inventor: Wai Keung Tse
  • Toy vehicle
    Patent number: D454602
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: March 19, 2002
    Assignee: Wah Hing Toys Development Co., Ltd.
    Inventor: Cliff Wai Keung Tse