Patents by Inventor Richard D. Redfearn

Richard D. Redfearn 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).

  • Acrylic compositions
    Patent number: 7250472
    Abstract: Acrylic compositions which can be processed into thermoformable acrylic sheet material with variegated non-homogeneous granite appearance are disclosed. The acrylic compositions comprise a matrix of polymethyl methacrylate having dispersed within it particles of a thermoplastic such as polymethyl methacrylate and one or more comonomers wherein the thermoplastic is in the shape of thin wafers 0.05 to 9.53 mm thick, 0.18 to 12.8 wide and 0.18 to 7.62 mm long.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: July 31, 2007
    Assignee: Lucite International, Inc.
    Inventors: Fareeduddin Farooq, James Leach, Michael R. Turbeville, Andrew H. Janowicz, Richard D. Redfearn
  • Acrylic copolymer composition and adhesive coatings therefrom
    Patent number: 4980410
    Abstract: An improved adhesive composition comprising a nonacidic aqueous latex copolymer of a lower acrylate, an acrylic nitrile and a glycidyl acrylate having a crosslinking agent dissolved in the aqueous phase.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: December 25, 1990
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Michael Fryd, Walter E. Pye, Richard D. Redfearn
  • Acrylic copolymer composition and adhesive coatings therefrom
    Patent number: 4975484
    Abstract: An improved adhesive composition comprising a nonacidic aqueous latex copolymer of a lower acrylate, an acrylic nitrile and a glycidyl acrylate having a crosslinking agent dissolved in the aqueous phase.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: December 4, 1990
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Michael Fryd, Walter E. Pye, Richard D. Redfearn