Patents by Inventor Tri Khai Tran

Tri Khai Tran 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).

  • Methods and apparatus for lenses and frames and eyeglasses
    Patent number: 7416298
    Abstract: Methods and apparatus for coupling lenses and frames, and eyeglasses, are provided in which a flexible washer (34) is compressed to engage a lens (16).
    Type: Grant
    Filed: June 20, 2006
    Date of Patent: August 26, 2008
    Inventor: Tri Khai Tran
  • Methods and apparatus for lenses and frames and eyeglasses
    Publication number: 20070291219
    Abstract: Methods and apparatus for coupling lenses and frames, and eyeglasses, are provided in which a flexible washer (34) is compressed to engage a lens (16).
    Type: Application
    Filed: June 20, 2006
    Publication date: December 20, 2007
    Inventor: Tri Khai Tran
  • Methods and apparatus for lenses and glasses
    Patent number: 7234811
    Abstract: Methods and apparatus for lenses and glasses are provided in which a lens (10) is formed with a thickness of less than 5 millimeters without grinding, and has two viewing segments (12 and 14). The first viewing segment (12) has a magnification power to correct for effects of presbyopia for near range viewing, and the second viewing segment (14) has a magnification power to correct for effects of presbyopia for intermediate range viewing.
    Type: Grant
    Filed: February 9, 2006
    Date of Patent: June 26, 2007
    Inventor: Tri Khai Tran