Patents by Inventor Joe Chih-Chung Yuan

Joe Chih-Chung Yuan 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).

  • 82 facet diamond
    Patent number: D504347
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: April 26, 2005
    Assignee: Sol Savransky Diamond, Inc.
    Inventor: Joe Chih-Chung Yuan
  • Diamond
    Patent number: D454517
    Type: Grant
    Filed: April 16, 2001
    Date of Patent: March 19, 2002
    Inventors: Joe Chih-Chung Yuan, Calvin S. C. Yuan
  • Precious stone flower design
    Patent number: D526237
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: August 8, 2006
    Assignee: Rosy Blue, N.V.
    Inventor: Joe Chih-Chung Yuan
  • Precious stone flower design
    Patent number: D530643
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: October 24, 2006
    Assignee: Rosy Blue, N.V.
    Inventor: Joe Chih-Chung Yuan
  • Diamond
    Patent number: D462922
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: September 17, 2002
    Inventors: Joe Chih-Chung Yuan, Calvin S. C. Yuan
  • Diamond
    Patent number: D473814
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: April 29, 2003
    Inventor: Joe Chih-Chung Yuan
  • Precious stone flower design
    Patent number: D485205
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: January 13, 2004
    Assignee: Rosy Blue, N.V.
    Inventor: Joe Chih-Chung Yuan
  • Five petal flower gemstone
    Patent number: D493381
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: July 27, 2004
    Assignee: Rosy Blue, N.V.
    Inventor: Joe Chih-Chung Yuan
  • Diamond
    Patent number: D382225
    Type: Grant
    Filed: May 22, 1996
    Date of Patent: August 12, 1997
    Inventor: Joe Chih-Chung Yuan