Patents by Inventor Wee-Pin Chao

Wee-Pin Chao 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).

  • Graft copolymer of syndiotactic styrene copolymer
    Patent number: 6437051
    Abstract: The present invention provides a graft copolymer of a syndiotactic styrene/para-alkylstyrene copolymer, having the formula of wherein R1 and R2 are independently selected from the group consisting of hydrogen, alkyl, and primary and secondary haloalkyl; X is a functional group selected from a group containing halogen, oxygen, sulfur, silicon, nitrogen, carbon, phosphorus, and mixtures thereof; Y is an atactic polymer moiety; a ranges from 10 to 30000; b ranges from 0 to 30000; c ranges from 0 to 30000; and d ranges from 1 to 30000. The compatibility of the graft copolymer of syndiotactic styrene/para-alkylstyrene copolymer of the present invention with other polymers is improved over a syndiotactic styrene polymer. Also, the graft copolymer of the present invention can serve as a compatibilizer for a polymer blend.
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: August 20, 2002
    Assignee: Industrial Technology Research Institute
    Inventors: Chi-Lan Li, Jing-Cherng Tsai, Joung-Yei Chen, Wee-Pin Chao, Bor-Ping Wang, In-Mau Chen, Huai-Mei Chou
  • Graft copolymer of syndiotatic styrene copolymer
    Publication number: 20020019494
    Abstract: The present invention provides a graft copolymer of a syndiotactic styrene/para-alkylstyrene copolymer, having the formula of 1
    Type: Application
    Filed: December 29, 2000
    Publication date: February 14, 2002
    Inventors: Chi-Lan Li, Jing-Cherng Tsai, Joung-Yei Chen, Wee-Pin Chao, Bor-Ping Wang, In-Mau Chen, Huai-Mei Chou