Patents by Inventor Yunchao Yu

Yunchao Yu 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).

  • Coated polycarbonate and method for making the same
    Patent number: 5554702
    Abstract: A polymeric coupling agent for chemically linking a scratch resistant coating composition to a polycarbonate substrate is disclosed. The agent is a product of the reaction between polycarbonate and 3-glycidoxypropyltrimethoxysilane (GPS) in the presence of a quaternary ammonium salt. The reaction in the solid state produces a GPS-modified polycarbonate having a bimodal molecular weight distribution which is effective in promoting the adhesion of a scratch resistant coating to a polycarbonate substrate.
    Type: Grant
    Filed: December 8, 1994
    Date of Patent: September 10, 1996
    Assignee: The University of Connecticut
    Inventors: James P. Bell, Ying Huang, Yunchao Yu