Patents by Inventor Xiuling Shirley Wang

Xiuling Shirley Wang 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).

  • Ethylene-tetrafluoroethylene phosphate composition
    Patent number: 8049040
    Abstract: Fluorophosphate containing an ethylene-tetrafluoroethylene moiety of formula (I) or (II): (A)w-P(O)(O?M+)3-w??(I) or wherein A is Rf—(CH2)k—[(CF2CF2)y—(CH2CH2)z]mO and contains from about 8 to about 22 carbon atoms; Rf is CnF2n+1; n and k are each independently 1 to about 6; y, z, and m are each independently 1, 2, 3, or mixture thereof; w is 1 or 2 or a mixture thereof; and M is hydrogen, ammonium ion, an alkali metal ion, or an alkanolammonium ion, said fluorophosphate useful as a surfactant for altering the surface behavior of a liquid by addition thereto, and for providing surface effects to a substrate treated with a composition containing the fluorophosphate.
    Type: Grant
    Filed: May 19, 2008
    Date of Patent: November 1, 2011
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Weiming Qiu, Xiuling Shirley Wang
  • Ethylene-tetrafluoroethylene phosphate composition
    Publication number: 20090286885
    Abstract: A composition comprising a compound of formula (I) or (II): (A)w-P(O)(O?M+)3-w ??(I) or wherein A is Rf—(CH2)k?[(CF2CF)y—(CH2CH2)z]mO and contains from about 8 to about 22 carbon atoms; Rf is CnF2n+1; n and k are each independently 1 to about 6; y, z, and m are each independently 1, 2, 3, or mixture thereof; w is 1 or 2 or a mixture thereof; and M is hydrogen, ammonium ion, an alkali metal ion, or an alkanolammonium ion.
    Type: Application
    Filed: May 19, 2008
    Publication date: November 19, 2009
    Applicant: E.I. du Pont de Nemuours and Company
    Inventors: Weiming Qiu, Xiuling Shirley Wang