TREA

Rainer Helwerth

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  • Eschborn, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Substituted Succinimides
    • Patent number 5,554,768
    • Issue date Sep 10, 1996
    • Hoechst Aktiengesellschaft
    • Reinhard D onges
    • C07 - ORGANIC CHEMISTRY
  • Information Patent Grant

    Aqueous functional fluids based on polymers
    • Patent number 4,769,167
    • Issue date Sep 6, 1988
    • Hoechst Aktiengesellschaft
    • Raimund Haas
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Aqueous functional fluids based on polymers
    • Patent number 4,668,410
    • Issue date May 26, 1987
    • Hoechst Aktiengesellschaft
    • Raimund Haas
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Water-soluble lubricant
    • Patent number 4,539,128
    • Issue date Sep 3, 1985
    • Hoechst Aktiengesellschaft
    • Max Grossmann
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Anticorrosive agent stable to hard water
    • Patent number 4,348,302
    • Issue date Sep 7, 1982
    • Hoechst Aktiengesellschaft
    • Horst Frohlich
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Anticorrosive agent for aluminium and aluminium alloys
    • Patent number 4,323,476
    • Issue date Apr 6, 1982
    • Hoechst Aktiengesellschaft
    • Rainer Helwerth
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Water miscible corrosion inhibitors
    • Patent number 4,297,236
    • Issue date Oct 27, 1981
    • Hoechst Aktiengesellschaft
    • Helmut Diery
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...