Patents by Inventor Hangtai Kai

Hangtai Kai 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).

  • Method for manufacturing polarized ophthalmic lenses
    Patent number: 7942523
    Abstract: The present invention relates to a method for manufacturing a polarized lens. In one embodiment, the method includes the steps of treating a polarized film with a composition to form a treated polarized film, providing a front lens mold having a concave surface with a curvature, spin-coating a hard coat composition onto the concave surface of the front lens mold to form a hard coat layer thereon, forming a first adhesive layer on the hard coat layer, placing the treated polarized film on the adhesive layer, curing the adhesive layer with UV or visible light to bond the treated polarized film to the hard coat layer, thereby forming a polarized front lens mold, and forming a polarized lens with the polarized front lens mold.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: May 17, 2011
    Assignee: Qspex Technologies, Inc.
    Inventors: Kai C. Su, Patrick Culley, Hangtai Kai
  • METHOD FOR MANUFACTURING POLARIZED OPHTHALMIC LENSES
    Publication number: 20090079934
    Abstract: The present invention relates to a method for manufacturing a polarized lens. In one embodiment, the method includes the steps of treating a polarized film with a composition to form a treated polarized film, providing a front lens mold having a concave surface with a curvature, spin-coating a hard coat composition onto the concave surface of the front lens mold to form a hard coat layer thereon, forming a first adhesive layer on the hard coat layer, placing the treated polarized film on the adhesive layer, curing the adhesive layer with UV or visible light to bond the treated polarized film to the hard coat layer, thereby forming a polarized front lens mold, and forming a polarized lens with the polarized front lens mold.
    Type: Application
    Filed: September 24, 2008
    Publication date: March 26, 2009
    Applicant: QSPEX TECHNOLOGIES, INC.
    Inventors: Kai C. SU, Patrick CULLEY, Hangtai KAI