Patents by Inventor David Highfield

David Highfield 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).

  • Floor covering
    Publication number: 20020168536
    Abstract: The present invention relates to sheet materials suitable for use in or as a floor covering. The sheet materials comprise a polyalkene resin in intimate admixture with at least one additive comprising a filler, wherein the polyalkene resin has a relatively narrow molecular weight distribution (MWD) and, a small amount of long chain branching and produced by a single site catalysed polymerisation of at least one, linear, branched or cyclic, alkene having from 2 to 20 carbon atoms. The present invention also extends to processes for the production of such sheet materials and floor coverings.
    Type: Application
    Filed: October 25, 2001
    Publication date: November 14, 2002
    Inventors: Brian Robert Simpson, Robert Ashley Mein, David Highfield, Richard Michael Kopchik
  • Floor covering
    Patent number: 6337126
    Abstract: The present invention relates to sheet materials suitable for use in or as a floor covering. The sheet materials comprise a polyalkene resin in intimate admixture with at least one additive comprising a filler, wherein the polyalkene resin has a relatively narrow molecular weight distribution (MWD), and a small amount of long chain branching and produced by a single site catalyzed polymerization of at least one, linear, branched or cyclic, alkene having from 2 to 20 carbon atoms. The present invention also extends to processes for the production of such sheet materials and floor coverings.
    Type: Grant
    Filed: March 6, 1997
    Date of Patent: January 8, 2002
    Assignee: Forbo International S.A.
    Inventors: Brian Robert Simpson, Robert Ashley Mein, David Highfield, Richard Michael Kopchik
  • Floor coverings
    Patent number: 6287706
    Abstract: The present invention relates to sheet materials suitable for use in or as a floor covering. The sheet materials comprise a polyalkene resin in intimate admixture with at least one additive comprising a filler, wherein the polyalkene resin has a relatively narrow molecular weight distribution (MWD) and, a small amount of long chain branching and produced by a single site catalysed polymerisation of at least one, linear, branched or cyclic, alkene having from 2 to 20 carbon atoms. The present invention also extends to processes for the production of such sheet materials and floor coverings.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: September 11, 2001
    Assignee: Forbo International S.A.
    Inventors: Brian Robert Simpson, Robert Ashley Mein, David Highfield, Richard Michael Kopchik