Patents by Inventor William H. K. Chu

William H. K. Chu 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).

  • Desktop decoration with movable advertisement signs
    Publication number: 20030005612
    Abstract: Desktop decoration with movable advertisement signs, including a decoration main body, a reducing mechanism, a motor and a turning unit. The motor is coupled with the reducing mechanism for driving the turning unit. The turning unit includes multiple driven gears and driving gears which are interlaced with the driven gears and drivingly engaged with the driven gears. Each driving gear has an engaging member. A shaft bolt is passed through the engaging member and the driving gear to fixedly connect therewith. The engaging member is operatively leant on an intermittent wheel. An advertising column is fixed on upper side of each intermittent wheel and pivotally disposed in an outer frame, whereby when the respective advertising columns are turned, the picture is changed.
    Type: Application
    Filed: February 14, 2001
    Publication date: January 9, 2003
    Applicant: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Te-Chi Su
  • Alarm with perpetual calendar for traveler
    Patent number: D436621
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: January 23, 2001
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin
  • Alarm with perpetual calendar suitable for traveler
    Patent number: D436992
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: January 30, 2001
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Shu-Chia Chang
  • Calculator with perpetual calendar
    Patent number: D437351
    Type: Grant
    Filed: May 18, 2000
    Date of Patent: February 6, 2001
    Assignee: Limax Electronics Co., Ltd.
    Inventors: Shu-Chia Chang, William H. K. Chu
  • Calculator
    Patent number: D438235
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: February 27, 2001
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Shu-Chia Chang
  • Calculator
    Patent number: D438237
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: February 27, 2001
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin
  • Calculator
    Patent number: D438238
    Type: Grant
    Filed: July 20, 2000
    Date of Patent: February 27, 2001
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin
  • Calculator
    Patent number: D438557
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: March 6, 2001
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin
  • Alarm with perpetual calendar suitable for traveler
    Patent number: D438900
    Type: Grant
    Filed: March 10, 2000
    Date of Patent: March 13, 2001
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin
  • Clock with movable advertisement signs
    Patent number: D452447
    Type: Grant
    Filed: March 23, 2001
    Date of Patent: December 25, 2001
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin
  • Calculator
    Patent number: D309627
    Type: Grant
    Filed: January 8, 1987
    Date of Patent: July 31, 1990
    Inventor: William H. K. Chu
  • Calculator
    Patent number: D332620
    Type: Grant
    Filed: July 15, 1991
    Date of Patent: January 19, 1993
    Inventor: William H. K. Chu
  • Desk calculator with perpetual calendar
    Patent number: D427237
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: June 27, 2000
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin
  • Calculator with perpetual calendar suitable for traveler
    Patent number: D427629
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: July 4, 2000
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin
  • Desk calculator with perpetual calendar
    Patent number: D427630
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: July 4, 2000
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin
  • Electronic notebook suitable for traveler
    Patent number: D430566
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: September 5, 2000
    Inventors: William H. K. Chu, Min-Hua Lin
  • Electronic notebook suitable for traveler
    Patent number: D430871
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: September 12, 2000
    Inventors: William H. K. Chu, Min-Hua Lin
  • Calculator
    Patent number: D433057
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: October 31, 2000
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Shu-Chai Chang
  • Calculator with perpetual calendar
    Patent number: D434070
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: November 21, 2000
    Assignee: Limax Electronics Co., Ltd.
    Inventors: Min-Hua Lin, William H. K. Chu
  • Electronic notebook
    Patent number: D435550
    Type: Grant
    Filed: February 24, 2000
    Date of Patent: December 26, 2000
    Assignee: Limax Electronics Co., Ltd.
    Inventors: William H. K. Chu, Min-Hua Lin