Harald Helmrich

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Frankfurt am Main, DE

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Patents Grantslast 30 patents

Information Patent Grant
Composite membrane, process of manufacturing it and process of usin...
- Patent number 5,849,195
- Issue date Dec 15, 1998
- Metallgesellschaft Aktiengesell-Schaft
- Peter Haenel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Multilayer membrane and process of manufacturing the same
- Patent number 5,183,571
- Issue date Feb 2, 1993
- Metallgesellschaft Aktiengesellschaft
- Peter Hanel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Multilayer membrane and process of manufacturing same
- Patent number 5,164,088
- Issue date Nov 17, 1992
- Metallgesellschaft Aktiengesellschaft
- /Peter Hanel
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Process for producing alkali metal alcoholates
- Patent number 4,895,989
- Issue date Jan 23, 1990
- Metallgesellschaft Aktiengesellschaft
- Ulrich Sander
- C07 - ORGANIC CHEMISTRY