Patents by Inventor Richard Neill Dutton

Richard Neill Dutton 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).

  • Heatsealable multi-layer polymer films
    Patent number: 6447899
    Abstract: A multi-layer film including: (a) a substrate layer of a thermoplastic polymer film having opposed first and second surfaces; and (b) a heat sealable layer associated with the first surface of the substrate and including (i) a first acrylic polymer and (ii) a second polymer which is a copolymer including residues derived from one or more olefinically unsaturated monomers and residues derived from one or more olefinically unsaturated monomers which include one or more functional groups. The first polymer (i) has a glass transition temperature in the range of from 40 to 120° C. and a weight average molecular weight in the range of from 20,000 to 60,000, the second polymer (ii) is a copolymer of a C1-C4 olefinically unsaturated hydrocarbon and an olefinically unsaturated carboxylic acid, and the heat-sealable layer includes from 5 to 60% by weight of the first acrylic polymer and from 40 to 95% by weight of the second polymer.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: September 10, 2002
    Assignee: UCB, S.A.
    Inventors: Richard Neill Dutton, Claire Elizabeth Thorpe