Patents by Inventor Kwok-Hung Liu

Kwok-Hung 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).

  • Lantern
    Patent number: D264251
    Type: Grant
    Filed: August 27, 1979
    Date of Patent: May 4, 1982
    Assignee: Transistolite Manufacturing Limited
    Inventor: Kwok-Hung Liu
  • Travel light
    Patent number: D469902
    Type: Grant
    Filed: April 3, 2002
    Date of Patent: February 4, 2003
    Assignee: Smartlite Manufacturing Limited
    Inventor: Kwok Hung Liu
  • Shaver
    Patent number: D285126
    Type: Grant
    Filed: January 31, 1984
    Date of Patent: August 12, 1986
    Assignee: Transistolite Manufacturing Ltd.
    Inventor: Kwok-Hung Liu
  • Car light
    Patent number: D588720
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: March 17, 2009
    Assignee: Smartlite Manufacturing Limited
    Inventor: Kwok Hung Liu
  • Lantern
    Patent number: D320092
    Type: Grant
    Filed: June 13, 1989
    Date of Patent: September 17, 1991
    Assignees: Transistolite Mfg., Ltd., Sol-Lite Mfg. Co., Ltd.
    Inventor: Kwok Hung Liu
  • Light
    Patent number: D384175
    Type: Grant
    Filed: June 14, 1996
    Date of Patent: September 23, 1997
    Assignee: Germain Electronic Ltd.
    Inventor: Kwok Hung Liu