Friedhelm Geiger

Person

6450 Hanau 9, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Process for the preparation of D,L-methionine or the salt thereof
- Patent number 5,990,349
- Issue date Nov 23, 1999
- Degussa Aktiengesellschaft
- Friedhelm Geiger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the preparation of D,L-methionine or the salt thereof
- Patent number 5,770,769
- Issue date Jun 23, 1998
- Degussa Aktiengesellschaft
- Friedhelm Geiger
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the hydrolysis of 5-(.beta.-methylmercaptoethyl)-hydantoin
- Patent number 4,518,801
- Issue date May 21, 1985
- Rudolf Bolze
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Working up of the residual gases resulting from the production of c...
- Patent number 4,434,148
- Issue date Feb 28, 1984
- Degussa Aktiengesellschaft
- Gerhard Bach
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process for the production of aqueous sodium methioninate solutions
- Patent number 4,391,987
- Issue date Jul 5, 1983
- Degussa Aktiengesellschaft
- Manfred Spindler
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
Process for the production of aqueous sodium methioninate solutions
- Patent number 4,391,988
- Issue date Jul 5, 1983
- Degussa Aktiengesellschaft
- Manfred Spindler
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
Process for the production of alkyl sulfonic acids
- Patent number 4,239,696
- Issue date Dec 16, 1980
- Gerd Schreyer
- C07 - ORGANIC CHEMISTRY

Friedhelm Geiger

Person

Patents Grantslast 30 patents

Process for the preparation of D,L-methionine or the salt thereof

Process for the preparation of D,L-methionine or the salt thereof

Process for the hydrolysis of 5-(.beta.-methylmercaptoethyl)-hydantoin

Working up of the residual gases resulting from the production of c...

Process for the production of aqueous sodium methioninate solutions

Process for the production of aqueous sodium methioninate solutions

Process for the production of alkyl sulfonic acids