Patents by Inventor Him-Chi Yu

Him-Chi Yu 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).

  • Telephone
    Patent number: D284004
    Type: Grant
    Filed: December 27, 1983
    Date of Patent: May 27, 1986
    Assignee: Picotronics Industries Limited
    Inventor: Him-Chi Yu
  • Telephone set
    Patent number: D331056
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: November 17, 1992
    Assignee: Picotronics Industries Limited
    Inventor: Him-Chi Yu
  • Telephone set
    Patent number: D334749
    Type: Grant
    Filed: June 5, 1991
    Date of Patent: April 13, 1993
    Assignee: Picotronics Industries Limited
    Inventor: Him-Chi Yu
  • Telephone set
    Patent number: D334932
    Type: Grant
    Filed: April 22, 1991
    Date of Patent: April 20, 1993
    Assignee: Picotronics Industries Limited
    Inventor: Him-Chi Yu
  • Telephone
    Patent number: D335669
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: May 18, 1993
    Assignee: Picotronics Industries Limited
    Inventor: Him-Chi Yu