Patents by Inventor Joseph Chan Ka Hung

Joseph Chan Ka Hung 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 handset housing
    Patent number: D384079
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: September 23, 1997
    Assignee: VTech Communications, Ltd.
    Inventor: Joseph Chan Ka Hung
  • Telephone base set housing
    Patent number: D388084
    Type: Grant
    Filed: January 4, 1996
    Date of Patent: December 23, 1997
    Assignee: Vtech Communications Ltd.
    Inventor: Joseph Chan Ka Hung
  • Telephone base housing
    Patent number: D394257
    Type: Grant
    Filed: September 5, 1996
    Date of Patent: May 12, 1998
    Assignee: Vtech Communications Ltd.
    Inventors: Joseph Chan Ka Hung, Pang Chi-Kong