Patents by Inventor Mark C. Richardson

Mark C. Richardson 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).

  • Stabilized polyether polyol and polyurethane foam obtained therefrom
    Patent number: 5571453
    Abstract: A stabilizer composition useful as an additive for polyether polyols, particularly those employed in the manufacture of polyurethane foams, is provided which comprises a diphenylamine:isobutylene:diisobutylene reaction product, a sterically hindered phenol and a trihydrocarbyl phosphite.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: November 5, 1996
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Lawrence B. Barry, Mark C. Richardson
  • Stabilized polyether polyol and polyurethane foam obtained therefrom
    Patent number: 5338478
    Abstract: A stabilizer composition useful as an additive for polyether polyols, particularly those employed in the manufacture of polyurethane foams, is provided which comprises a diarylamine, a sterically hindered phenol and a pentaerythritol diphosphite.
    Type: Grant
    Filed: July 27, 1993
    Date of Patent: August 16, 1994
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Lawrence B. Barry, Mark C. Richardson
  • Phenylenediamines as high temperature heat stabilizers
    Patent number: 5298662
    Abstract: The invention relates to the high temperature stabilization of polyol heat transfer fluids by the use of N-phenyl-p-phenylenediamines.
    Type: Grant
    Filed: June 18, 1990
    Date of Patent: March 29, 1994
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Bernard C. Smith, Mark C. Richardson
  • Stabilization of polyoxyalkylene polyether polyols
    Patent number: 5268394
    Abstract: The invention relates to the use of an acridans of Structure (I) as a stabilizer, preferably combined with hindered amine, phenolic, and phosphite stabilizers for stabilizing polyether polyols for polyurethane flexible foams and as stabilizers for the polyglycols, heat transfer fluids, lubricating additives.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: December 7, 1993
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Edward L. Wheeler, Lawrence B. Barry, Mark C. Richardson
  • Stabilized polyether polyol and polyurethane foam obtained therefrom
    Patent number: 5256333
    Abstract: A stabilizer composition useful as an additive for polyether polyols, particularly those employed in the manufacture of polyurethane foams, is provided which comprises a diarylamine, a sterically hindered phenol and a pentaerythritol diphosphite.
    Type: Grant
    Filed: March 25, 1993
    Date of Patent: October 26, 1993
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Lawrence B. Barry, Mark C. Richardson
  • Stabilization of polypols with liquid antiscorch composition
    Patent number: 5238606
    Abstract: The invention relates to the use of certain styrenated diphenylamine and hindered phenol compositions for the stabilization of polyether polyols.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: August 24, 1993
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Bruce W. Downs, Paul E. Stott, Lawrence B. Barry, Mark C. Richardson