Patents by Inventor Chan Chung Hon

Chan Chung Hon 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).

  • Retractable illuminating magnifier
    Patent number: 5754349
    Abstract: A retractable magnifier includes an enclosure and a frame slidably mounted in the enclosure. The frame is slidable between a retracted position and two extended positions. A magnifying lens is mounted in the frame such that the lens is enclosed by the enclosure when the frame is in the retracted position, and such that the lens is exposed when the frame is in the extended position. A light with electric terminals is mounted in the frame, and is connected through a pair of conductive springs to a power source. One end of one spring is slidable in a slot in the frame to engage a switch terminal to automatically switch the light on when the frame is extended, and off when the frame is retracted.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: May 19, 1998
    Assignee: Sunrich Manufactory Ltd.
    Inventor: Chan Chung Hon
  • Combined flexible light and clock
    Patent number: D380567
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: July 1, 1997
    Assignee: Sunrich Manufactory Ltd.
    Inventor: Chan Chung Hon
  • Pop up magnifier
    Patent number: D394272
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: May 12, 1998
    Assignee: Sunrich Manufactory Ltd.
    Inventor: Chan Chung Hon