Patents by Inventor Chien-Tu Liu

Chien-Tu Liu 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).

  • Magnetic dish
    Patent number: D355827
    Type: Grant
    Filed: August 11, 1993
    Date of Patent: February 28, 1995
    Inventor: Chien-Tu Liu
  • Magnetic dish
    Patent number: D367757
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: March 12, 1996
    Inventor: Chien-Tu Liu
  • Can opener
    Patent number: D401823
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: December 1, 1998
    Inventor: Chien-Tu Liu