Inventor
Günther Köhler
Inventor
Marl, DE
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds60%
A61KPreparations for medical, dental or toiletry purposes10%
A61QSpecific use of cosmetics or similar toiletry preparations10%
C07DHeterocyclic compounds10%
Y02PClimate change mitigation technologies in the production or processing of goods10%
PatentTitleYear
7,700,805'Process for preparing amines'20107,385,092'Process for preparing alkanediols and alkanetriols having a vicinal diol group'20087,208,640'Process for isolating highly pure 2-methoxypropene'20076,958,421'Salt-free preparation of cyclobutanone'20056,121,466'Process for the preparation of macrocyclic esters'20005,436,365'Process for the preparation of pimelic esters'19955,387,718'Method of manufacturing alkylphenyl alkyl ethers or alkylphenyl alkyl thioethers'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–2000Patents assigned to HUELS CHEMISCHE WERKE AG (3)· patent assignee history
1995–2010Based in Marl, DE· patent location history
2005–2008Patents assigned to DEGUSSA (3)· patent assignee history
2010Patents assigned to EVONIK DEGUSSA GMBH (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DEGUSSA | 3 | 2005–2008 |
| HUELS CHEMISCHE WERKE AG | 3 | 1995–2000 |
| EVONIK DEGUSSA GMBH | 1 | 2010 |
Locations
| Location | Patents | Span |
|---|---|---|
| Marl, DE | 7 | 1995–2010 |