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Jon H. Simpson

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  • St. Paul, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sag-resistant compositions
    • Patent number 4,361,676
    • Issue date Nov 30, 1982
    • Minnesota Mining and Manufacturing Company
    • Jon H. Simpson
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Sag-resistant compositions
    • Patent number 4,243,768
    • Issue date Jan 6, 1981
    • Minnesota Mining and Manufacturing Company
    • Jon H. Simpson
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Consolidation of aggregate material
    • Patent number 4,139,676
    • Issue date Feb 13, 1979
    • Minnesota Mining and Manufacturing Company
    • Edward W. Janssen
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES