Patents by Inventor Hsin Chen Tien

Hsin Chen Tien 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).

  • Cell phone keypad
    Patent number: D538275
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: March 13, 2007
    Inventor: Hsin Chen Tien
  • Set of keys for a keypad
    Patent number: D382262
    Type: Grant
    Filed: October 19, 1995
    Date of Patent: August 12, 1997
    Inventor: Hsin Chen Tien