Patents by Inventor Edward J. Greenwood

Edward J. Greenwood 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).

  • Rug underlay substantially impervious to liquids
    Patent number: 5601910
    Abstract: A carpet underlay comprising a fibrous non-woven substrate composed of natural or synthetic fibers having in or on it a repellent finish which makes said substrate substantially impervious to liquids.
    Type: Grant
    Filed: April 18, 1995
    Date of Patent: February 11, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Peter M. Murphy, Edward J. Greenwood
  • Water- and oil-repellent fluoro(meth)acrylate copolymers
    Patent number: 5344903
    Abstract: Lower homologue perfluoroalkylethyl (meth)acrylates copolymerized with vinylidene chloride and alkyl (meth)acrylates; optionally with N-methylolacrylamide, hydroxyalkyl (meth)acrylates, and/or alkyloxy (meth)acrylates, impart high levels of water-, alcohol- and oil-repellency to fabrics under mild conditions.
    Type: Grant
    Filed: April 14, 1993
    Date of Patent: September 6, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Kimberly G. Raiford, Edward J. Greenwood, Robert H. Dettre
  • Oil- and water-repellent copolymers
    Patent number: 4742140
    Abstract: Oil- and water-repellent solid fluoropolymers are disclosed, comprising by weight:(a) 40-75% polymer chain units derived from a mixture of perfluoroalkylethylacrylate monomers of formulaCF.sub.3 CF.sub.2 (CF.sub.2).sub.k C.sub.2 H.sub.4 OC(O)CH.dbd.CH.sub.2,the monomer mixture consisting essentially of:(1) 0-10% monomer wherein k is 4 or less;(2) 45-75% monomer wherein k is 6;(3) 20-40% monomer wherein k is 8;(4) 1-20% monomer wherein k is 10; and(5) 0-5% monomer wherein k is 12;(b) 10-35% polymer chain units derived from vinylidene chloride; and(c) 10-25% polymer chain units derived from an alkyl acrylate or alkyl methacrylate having an alkyl chain length of 2-18 carbons.
    Type: Grant
    Filed: September 9, 1986
    Date of Patent: May 3, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edward J. Greenwood, Albert L. Lore, Nandakumar S. Rao