Patents by Inventor Zhen Yu Yang

Zhen Yu Yang 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).

  • Fluorinated monomers and polymers
    Patent number: 5326917
    Abstract: Disclosed herein are novel monomers of the formula CF.sub.2 .dbd.CF(CF.sub.2).sub.n CH.sub.2 OCF.dbd.CF.sub.2, wherein n is 1, 2 or 3, and novel intermediates of the formula CF.sub.2 ClCFCl(CF.sub.2).sub.n CH.sub.2 OCF.dbd.CF.sub.2 wherein n is 1, 2 or 3. Also disclosed is a fluoropolymer containing cyclic units when the monomer wherein n is 1 is free radically polymerized. The polymer is particularly useful in for coatings and encapsulants.
    Type: Grant
    Filed: May 14, 1993
    Date of Patent: July 5, 1994
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Andrew E. Feiring, Bruce E. Smart, Zhen-Yu Yang
  • Fluorinated monomers and polymers
    Patent number: 5260492
    Abstract: Disclosed herein are novel monomers of the formula CF.sub.2 .dbd.CF(CF.sub.2).sub.n CH.sub.2 OCF.dbd.CF.sub.2, wherein n is 1, 2 or 3, and novel intermediates of the formula CF.sub.2 ClCFCl(CF.sub.2).sub.n CH.sub.2 OCF.dbd.CF.sub.2 wherein n is 1, 2 or 3. Also disclosed is a fluoropolymer containing cyclic units when the monomer wherein n is 1 is free radically polymerized. The polymer is particularly useful in for coatings and encapsulants.
    Type: Grant
    Filed: December 21, 1992
    Date of Patent: November 9, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Andrew E. Feiring, Bruce E. Smart, Zhen-Yu Yang