Patents by Inventor Yin-Tsang Chen

Yin-Tsang Chen 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).

  • Cooking pot
    Patent number: D359878
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: July 4, 1995
    Inventor: Yin-Tsang Chen
  • Pet feeder
    Patent number: D373448
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: September 3, 1996
    Inventor: Yin-Tsang Chen
  • Pet feeder
    Patent number: D373449
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: September 3, 1996
    Inventor: Yin-Tsang Chen
  • Pet feeder
    Patent number: D373858
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: September 17, 1996
    Inventor: Yin-Tsang Chen