Patents by Inventor Hsiang-Lin Chiang

Hsiang-Lin Chiang 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).

  • Polyurethane derivatives, composition thereof and dye additives comprising the polyurethane derivatives
    Patent number: 8512421
    Abstract: A polyurethane derivative and a composition thereof are disclosed. The polyurethane derivative of the present invention has a structure of formula (I). The polyurethane derivative and the composition thereof can be used for increasing light fastness.
    Type: Grant
    Filed: September 18, 2012
    Date of Patent: August 20, 2013
    Assignee: Everlight Chemical Industrial Corporation
    Inventors: Hsin-Ying Lu, Sheue-Rong Lee, Tzu-Heng Ko, Hsiang-Lin Chiang, Der-Gun Chou