Patents by Inventor Chit Ming Chang

Chit Ming Chang 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).

  • Plastic optical frame having adjustable nose pad
    Patent number: 6132042
    Abstract: The invention provides a nose pad assembly for a plastic optical frame comprising a nose pad body, a handle fixedly attached to the nose pad body, the handle having a handle bore extending substantially vertically through the handle, one or more columns extending from the plastic optical frame having one or more column bores, and a fastener extending through the handle bore and the one or more column bores to hingedly fasten the nose pad body to the plastic optical frame.
    Type: Grant
    Filed: July 30, 1999
    Date of Patent: October 17, 2000
    Inventor: Chit Ming Chang