Patents by Inventor Keen Hsu

Keen Hsu 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).

  • Lighting fixture control device
    Patent number: 5814945
    Abstract: A lighting fixture control device has a base casing, an upper cover covering the base casing, an arc-shaped lens disposed on the base casing, an electric circuit board disposed on a bottom of the upper cover, and a control integrated circuit chip disposed on a bottom of the electric circuit board. The arc-shaped lens collects and focuses light. The electric circuit board has a photo-field-effect transistor to detect an approaching article. The arc-shaped lens reflects light to the photo-field-effect transistor to actuate the electric circuit board.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: September 29, 1998
    Inventor: Keen Hsu
  • Bathroom lamp
    Patent number: D397487
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: August 25, 1998
    Assignee: Bright Yin Huey Co., Ltd
    Inventor: Keen Hsu
  • Lamp shade
    Patent number: D397491
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: August 25, 1998
    Assignee: Bright Yin Huey Co., Ltd
    Inventor: Keen Hsu
  • Lamp shade
    Patent number: D397492
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: August 25, 1998
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Lamp shade
    Patent number: D397493
    Type: Grant
    Filed: July 26, 1997
    Date of Patent: August 25, 1998
    Inventor: Keen Hsu
  • Chandelier
    Patent number: D400288
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: October 27, 1998
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Lamp body
    Patent number: D402397
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: December 8, 1998
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Floor lamp
    Patent number: D403099
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: December 22, 1998
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Ceiling lamp
    Patent number: D403795
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: January 5, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Lamp shade
    Patent number: D405911
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: February 16, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Lamp shade
    Patent number: D405912
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: February 16, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Lamp shade
    Patent number: D405913
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: February 16, 1999
    Assignee: Bright Yin Huey Co. Ltd.
    Inventor: Keen Hsu
  • Lamp housing
    Patent number: D406380
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: March 2, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Lamp shade
    Patent number: D406381
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: March 2, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Lamp housing
    Patent number: D406382
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: March 2, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Floor lamp
    Patent number: D407522
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: March 30, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Floor lamp
    Patent number: D407523
    Type: Grant
    Filed: December 4, 1997
    Date of Patent: March 30, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Lamp base
    Patent number: D407525
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: March 30, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu
  • Lamp shade
    Patent number: D407844
    Type: Grant
    Filed: July 26, 1997
    Date of Patent: April 6, 1999
    Inventor: Keen Hsu
  • Lamp shade
    Patent number: D410106
    Type: Grant
    Filed: April 1, 1998
    Date of Patent: May 18, 1999
    Assignee: Bright Yin Huey Co., Ltd.
    Inventor: Keen Hsu