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Keith E. Stephens

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Bituminous emulsions
    • Patent number 9,115,296
    • Issue date Aug 25, 2015
    • Kraton Polymers US LLC
    • Robert Q. Kluttz
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Process for preparing a bituminous binder composition
    • Patent number 7,728,074
    • Issue date Jun 1, 2010
    • Kraton Polymers US LLC
    • Robert Q. Kluttz
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Bituminous binder composition and process for preparing the same
    • Patent number 7,622,519
    • Issue date Nov 24, 2009
    • Kraton Polymers US LLC
    • Robert Q. Kluttz
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Process for preparing a bituminous binder composition
    • Patent number 7,592,381
    • Issue date Sep 22, 2009
    • Kraton Polymers US LLC
    • Robert Q. Kluttz
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Blown asphalt compositions
    • Patent number 7,576,148
    • Issue date Aug 18, 2009
    • Kraton Polymers US LLC
    • Robert Q. Kluttz
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Cross-linking compositions for polymer-modified asphalt compositions
    • Patent number 7,402,619
    • Issue date Jul 22, 2008
    • Kraton Polymers US LLC
    • Keith E. Stephens
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Polymer modified bitumen compositions
    • Patent number 6,759,454
    • Issue date Jul 6, 2004
    • Kraton Polymers US LLC
    • Keith E. Stephens
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

  • Information Patent Application

    PROCESS FOR PREPARING A BITUMINOUS BINDER COMPOSITION
    • Publication number 20090299010
    • Publication date Dec 3, 2009
    • Kraton Polymers U.S. LLC
    • Robert Q. Kluttz
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    BITUMINOUS BINDER COMPOSITION AND PROCESS FOR PREPARING THE SAME
    • Publication number 20080275183
    • Publication date Nov 6, 2008
    • Kraton Polymers U.S. LLC
    • Robert Q. Kluttz
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    BITUMINOUS EMULSIONS
    • Publication number 20080114099
    • Publication date May 15, 2008
    • Kraton Polymers U.S. LLC
    • Robert Q. Kluttz
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Process for preparing a bituminous binder composition
    • Publication number 20070112102
    • Publication date May 17, 2007
    • Kraton Polymers U.S. LLC
    • Robert Q. Kluttz
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Blown asphalt compositions
    • Publication number 20070105986
    • Publication date May 10, 2007
    • Kraton Polymers U.S. LLC
    • Robert Q. Kluttz
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Cross-linking compositions for polymer-modified asphalt compositions
    • Publication number 20060223915
    • Publication date Oct 5, 2006
    • Kraton Polymers U.S. LLC
    • Keith E. Stephens
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Application

    Polymer modified bitumen compositions
    • Publication number 20030149140
    • Publication date Aug 7, 2003
    • Keith E. Stephens
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...