Patents by Inventor Sharlene Renee Williams

Sharlene Renee Williams 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).

  • SULFONATED POLYOXADIAZOLE POLYMERS
    Publication number: 20130217856
    Abstract: Described are sulfonated polyoxadiazole polymers with a high degree of sulfonation and good flammability properties. The polymer has repeat units of Formula (I) and one or both of Formula (II) and (IIa): wherein M is a cation. The polymers are useful in articles such as fibers.
    Type: Application
    Filed: December 5, 2011
    Publication date: August 22, 2013
    Applicant: E.I.DuPont de Nemours and Company
    Inventors: Michael W Cobb, Alexander Anthony Marchione, John Henry Mcminn, Sharlene Renee Williams
  • FLAME RESISTANT SPUN STAPLE YARNS MADE FROM BLENDS OF FIBERS DERIVED FROM SULFONATED POLYOXADIAZOLE POLYMERS
    Publication number: 20130210306
    Abstract: Described is a flame-resistant spun yarn having: about 50 to about 95 parts by weight of a sulfonated polyoxadiazole based staple fiber comprising repeat units of Formula (I) and one or both of Formula (II) and (IIa): wherein M is a cation; and about 5 to about 50 parts by weight of a textile staple fiber having limiting oxygen index of 21 or greater and a tenacity of about 4 grams per denier or greater, based on the total amount of the polymeric fiber and the textile fiber in the yarn.
    Type: Application
    Filed: December 5, 2011
    Publication date: August 15, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Michael W. Cobb, Sharlene Renee Williams, Reiyao Zhu