Patents by Inventor Susan Chia-Yu Yeh

Susan Chia-Yu Yeh 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).

  • Polypropylene polymers
    Patent number: 7235618
    Abstract: Embodiments of the present invention include a polypropylene homopolymer synthesized from a metallocene catalyst system and methods of forming the homopolymer, the homopolymer having an aluminum and chlorine recoverables value of less than 25 ppm and a xylene solubles of less than 1 wt % relative to the total weight of the homopolymer. The resulting homopolymer has other desirable properties such as a heat deflection temperature at 0.45 MPa of from 90° C. to 110° C., and a MWD value of from 1.7 to 5.0. These properties make embodiments of the homopolymer desirable for films, and in particular for capacitor films.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: June 26, 2007
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Chon-Yie Lin, Bernard Louis Bossaert, Michael Chia-Chao Chen, Susan Chia-Yu Yeh
  • Polypropylene polymers
    Publication number: 20040171782
    Abstract: Embodiments of the present invention include a polypropylene homopolymer synthesized from a metallocene catalyst system and methods of forming the homopolymer, the homopolymer having an aluminum and chlorine recoverables value of less than 25 ppm and a xylene solubles of less than 1 wt % relative to the total weight of the homopolymer. The resulting homopolymer has other desirable properties such as a heat deflection temperature at 0.45 MPa of from 90° C. to 110° C., and a MWD value of from 1.7 to 5.0. These properties make embodiments of the homopolymer desirable for films, and in particular for capacitor films.
    Type: Application
    Filed: July 8, 2003
    Publication date: September 2, 2004
    Inventors: Chon-Yie Lin, Bernard Louis Bossert, Chen Michael Chia-Chao, Susan Chia-Yu Yeh