Erich Ackermann

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Kelkheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Surfactants based on hydroxynaphthoic esters and preparation and us...
- Patent number 5,194,665
- Issue date Mar 16, 1993
- Hoechst AG.
- Heinz Uhrig
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Resin acid esters based on novolak oxyalkylates, their preparation...
- Patent number 5,100,989
- Issue date Mar 31, 1992
- Hoechst Aktiengesellschaft
- Heinz Uhrig
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Surfactants based on hydroxynaphthoic esters and preparation and us...
- Patent number 4,980,425
- Issue date Dec 25, 1990
- Hoechst Aktiengesellschaft
- Heinz Uhrig
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...