Patents by Inventor Ping Hay Heun

Ping Hay Heun 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).

  • Rotary driving tool
    Patent number: D437758
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: February 20, 2001
    Assignee: Choon Nang Electrical Appliances Mfy., Ltd.
    Inventor: Ping Hay Heun
  • Battery charger
    Patent number: D440202
    Type: Grant
    Filed: August 31, 2000
    Date of Patent: April 10, 2001
    Assignee: Choon Nang Electrical Appliance Mfy., Ltd.
    Inventor: Ping Hay Heun
  • Electric jigsaw
    Patent number: D440474
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: April 17, 2001
    Assignee: Choon Nang Electrical Appliance Mfy., Ltd.
    Inventor: Ping Hay Heun
  • Remote control transmitter for a dog fence
    Patent number: D380691
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: July 8, 1997
    Assignee: GSL Engineering, Ltd.
    Inventor: Ping Hay Heun
  • Receiver of an electronic dog collar
    Patent number: D380692
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: July 8, 1997
    Assignee: GSL Rechargeable Products, Ltd.
    Inventor: Ping Hay Heun
  • Rotary driving tool
    Patent number: D410829
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: June 8, 1999
    Assignee: Choon Nang Electrical Appliance Mfty., Ltd.
    Inventor: Ping Hay Heun
  • Electric jigsaw
    Patent number: D414094
    Type: Grant
    Filed: January 26, 1999
    Date of Patent: September 21, 1999
    Assignee: Choon Nang Electrical Appliance Mfy., Ltd.
    Inventor: Ping Hay Heun
  • Electric drill
    Patent number: D419413
    Type: Grant
    Filed: March 8, 1999
    Date of Patent: January 25, 2000
    Assignee: Choon Nang Electrical Appliance Mfty., Ltd.
    Inventor: Ping Hay Heun
  • Electric rotary tool
    Patent number: D427040
    Type: Grant
    Filed: November 12, 1999
    Date of Patent: June 27, 2000
    Assignee: Choon Nang Electrical Appliance Mfy., Ltd.
    Inventor: Ping Hay Heun
  • Electric rotary tool
    Patent number: D427870
    Type: Grant
    Filed: August 25, 1999
    Date of Patent: July 11, 2000
    Assignee: Choon Nang Electrical Appliance MFY., Ltd.
    Inventor: Ping Hay Heun
  • Electric grinder
    Patent number: D433906
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: November 21, 2000
    Assignee: Choon Nang Electrical Appliance Mfy., Ltd.
    Inventor: Ping Hay Heun