Wolf Pfeifer

Follow

Person

Bruhl, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Method of preparing hydrogen cyanide
- Patent number 4,961,914
- Issue date Oct 9, 1990
- Degussa Aktiengesellschaft
- Michael Witzel
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process & apparatus for the production of hydrogen cyanide
- Patent number 4,853,190
- Issue date Aug 1, 1989
- Degussa AG
- Reinhard Manner
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process and apparatus for the production of hydrogen cyanide
- Patent number 4,594,234
- Issue date Jun 10, 1986
- Degussa Aktiengesellschaft
- Reinhard Manner
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Process for the production of 5-arylidene hydantoins (B)
- Patent number 4,345,072
- Issue date Aug 17, 1982
- Degussa AG
- Axel Kleemann
- C07 - ORGANIC CHEMISTRY