Patents by Inventor Sing Yum Lai

Sing Yum Lai 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).

  • Eyewear hinge
    Patent number: D701558
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: March 25, 2014
    Assignee: See Kiang Optical Mfy. Co., Ltd.
    Inventor: Sing Yum Lai