Patents by Inventor Hing Yuen Cheung

Hing Yuen Cheung 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).

  • Clip-on accessory for eyeglasses
    Patent number: D565636
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: April 1, 2008
    Assignee: Chuen Fung Spectacles Services Manufactory Limited
    Inventor: Hing Yuen Cheung
  • Clip-on accessory for eyeglasses
    Patent number: D495731
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: September 7, 2004
    Assignee: Chuen Fung Spectacles Services Manufactory Limited
    Inventor: Hing Yuen Cheung
  • Spring hinge
    Patent number: D682924
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: May 21, 2013
    Assignee: Chuen Fung Spectacles Services Manufactory Limited
    Inventor: Hing Yuen Cheung
  • Eye glasses with springy hinge
    Patent number: D740879
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: October 13, 2015
    Assignee: CHUEN FUNG SPECTACLES SERVICES MANUFACTORY LTD.
    Inventor: Hing Yuen Cheung