Patents by Inventor Larry L. Bradford

Larry L. Bradford 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).

  • Polyurethane foam containing flame retardant blend of non-oligomeric and oligomeric flame retardants
    Patent number: 7288577
    Abstract: A polyurethane foam can be flame retarded by the incorporation therein of a flame retardant blend that comprises: (a) a non-oligomeric non-halogenated organophosphorus flame retardant (e.g., a phosphate ester) that is adapted for use in a polyurethane foam formulation; and (b) an oligomeric organophosphorus flame retardant (e.g., a phosphate ester) having a phosphorus content of no less than about 10%, by weight, and at least three phosphate ester units therein.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: October 30, 2007
    Assignee: Supresta U.S. LLC
    Inventors: Larry L. Bradford, Emanuel Pinzoni, Barbara A. Williams, Theodore Halchak
  • Flame retardant blend containing monomeric and oligomeric flame retardants
    Publication number: 20040024097
    Abstract: A flame retardant blend is disclosed that comprises: (a) a monomeric halogenated organic flame retardant that is adapted for use in a polyurethane foam formulation; and (b) an oligomeric organophosphate flame retardant having a phosphorus content of no less than about 10%, by weight, and at least three phosphate ester units therein, the amount of (a) in the blend being no less than the amount of (b). It is useful in polyurethane foams.
    Type: Application
    Filed: July 29, 2003
    Publication date: February 5, 2004
    Inventors: Larry L. Bradford, Emanuel Pinzoni, Barbara A. Williams, Theodore Halchak
  • Polyurethane foam containing a blend of monomeric and oligomeric flame retardants
    Patent number: 6262135
    Abstract: A flame retardant blend is disclosed that comprises: (a) a monomeric halogenated organic flame retardant that is adapted for use in a polyurethane foam formulation; and (b) an oligomeric organophosphate flame retardant having a phosphorus content of no less than about 10%, by weight, and at least three phosphate ester units therein, the amount of (a) in the blend being no less than the amount of (b). It is useful in polyurethane foams.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: July 17, 2001
    Assignee: Akzo Nobel NV
    Inventors: Larry L. Bradford, Emanuel Pinzoni, Barbara A. Williams, Theodore Halchak
  • Method and apparatus for the preparation of foamed structures
    Patent number: 4298557
    Abstract: In the preparation of polyurethane foam by the provision of foamable urethane composition to a trough and subsequent overflow of the trough to a conveyor belt for final foaming and curing of the urethane composition, improved product is obtained by maintaining temperature uniformity laterally across the trough.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: November 3, 1981
    Assignee: The Dow Chemical Company
    Inventors: Larry L. Bradford, David R. Jordan, Kenneth W. Williams