Patents by Inventor Kwong Chi Chan

Kwong Chi Chan 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).

  • Flashlight
    Patent number: 6174071
    Abstract: A flashlight includes an elongate body having a front end and providing a compartment for containing a battery cell and a head assembly connected to the front end. The head assembly includes a light bulb, a reflector movable between an inner position behind the light bulb and an outer position surrounding the light bulb for light focusing, and a colored filter movable between an inner position behind the light bulb and an outer position surrounding the light bulb for light color changing. The flashlight includes a manually operated mechanism for initially moving the filter from the inner position to the outer position and subsequently moving the reflector from the inner position to the outer position.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: January 16, 2001
    Inventor: Kwong Chi Chan
  • Multipurpose stationery kit
    Patent number: D321637
    Type: Grant
    Filed: February 11, 1988
    Date of Patent: November 19, 1991
    Inventor: Kwong-Chi Chan
  • Pair of binoculars
    Patent number: D346175
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: April 19, 1994
    Inventor: Kwong-Chi Chan