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Hans Frei

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Patents Grantslast 30 patents

  • Information Patent Grant

    Flexible polyurethane foam
    • Patent number 9,023,907
    • Issue date May 5, 2015
    • Fritz Nauer AG
    • Hans Frei
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...

Patents Applicationslast 30 patents

  • Information Patent Application

    Flexible Polyurethane Foam
    • Publication number 20070232711
    • Publication date Oct 4, 2007
    • Hans Frei
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...