Hans-Werner Stephan

Person

Hurth, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process to transport acetylene
- Patent number 5,531,075
- Issue date Jul 2, 1996
- Messer Griesheim GmbH
- Hartmut Behringer
- F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
Information Patent Grant
Process for making tertiary alkylphosphines
- Patent number 4,757,156
- Issue date Jul 12, 1988
- Hoechst Aktiengesellschaft
- Norbert Weferling
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for removing organic contaminants from wet-processed phosph...
- Patent number 4,540,558
- Issue date Sep 10, 1985
- Hoechst Aktiengesellschaft
- Reinhard Gradl
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for separating carbon black from an aqueous suspension
- Patent number 4,530,769
- Issue date Jul 23, 1985
- Hoechst Aktiengesellschaft
- Manfred Wolter
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for making titanium dioxide concentrates
- Patent number 4,517,163
- Issue date May 14, 1985
- Hoechst Aktiengesellschaft
- Klaus Jodden
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Metering device
- Patent number 4,447,400
- Issue date May 8, 1984
- Hoechst Aktiengesellschaft
- Hans-Werner Stephan
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Electrolytic cell
- Patent number 4,402,812
- Issue date Sep 6, 1983
- Hoechst Aktiengesellschaft
- Herbert Panter
- C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR
Information Patent Grant
Process for removing phosphorus in vapor form and phosphanes from g...
- Patent number 4,355,010
- Issue date Oct 19, 1982
- Hoechst Aktiengesellschaft
- Klaus Jodden
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Apparatus for making red phosphorus
- Patent number 4,330,504
- Issue date May 18, 1982
- Hoechst Aktiengesellschaft
- Klaus Lehr
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Production of phosphorous acid
- Patent number 4,278,647
- Issue date Jul 14, 1981
- Hoechst Aktiengesellschaft
- Klaus Jodden
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for making red phosphorus
- Patent number 4,273,752
- Issue date Jun 16, 1981
- Hoechst Aktiengesellschaft
- Klaus Lehr
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Continuous production of organic phosphines
- Patent number 4,163,760
- Issue date Aug 7, 1979
- Hoechst Aktiengesellschaft
- Georg Elsner
- C07 - ORGANIC CHEMISTRY

Hans-Werner Stephan

Person

Patents Grantslast 30 patents

Process to transport acetylene

Process for making tertiary alkylphosphines

Process for removing organic contaminants from wet-processed phosph...

Process for separating carbon black from an aqueous suspension

Process for making titanium dioxide concentrates

Metering device

Electrolytic cell

Process for removing phosphorus in vapor form and phosphanes from g...

Apparatus for making red phosphorus

Production of phosphorous acid

Process for making red phosphorus

Continuous production of organic phosphines