Hermann Hoffmann

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Kelkheim, DE

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Patents Grantslast 30 patents

Information Patent Grant
Alkenylaminomethylenephosphonic acids and copolymers thereof with u...
- Patent number 5,126,418
- Issue date Jun 30, 1992
- Hoechst Aktiengesellschaft
- Christoph Porz
- C07 - ORGANIC CHEMISTRY
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Esters of fatty acids, which may be quaternized, from oxalkylated a...
- Patent number 4,997,912
- Issue date Mar 5, 1991
- Hoechst Aktiengesellschaft
- Herbert Wirtz
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Salts of alkenylsuccinic acid monoamides
- Patent number 4,722,812
- Issue date Feb 2, 1988
- Hoechst Aktiengesellschaft
- Werner Ritschel
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Use of demulsifying mixtures for breaking petroleum emulsions
- Patent number 4,183,820
- Issue date Jan 15, 1980
- Th. Goldschmidt AG
- Heinz Theile
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...