Inventor
Gerd Bohmholdt
Inventor
Marl-Polsum, DE
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds60%
B01DSeparation20%
C10KPurifying or modifying the chemical composition of combustible gases containing carbon monoxide20%
PatentTitleYear
5,360,931'Continuous multi-stage process for the preparation of (cyclo) aliphatic diisocyanates'19945,087,739'Circulation process for the production of aliphatic and cycloaliphatic diisocyanates'19924,142,875'Process for the purification of scrubbing solvents by removal of Ni(CO).sub .'19793,981,921'Process for producing ketones'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1979Patents assigned to VEBA CHEMIE AG (2)· patent assignee history
1976Based in Westerholt, DE· patent location history
1979–1992Based in Marl-Polsum, DE· patent location history
1992–1994Patents assigned to HUELS CHEMISCHE WERKE AG (2)· patent assignee history
1994Based in Marl, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HUELS CHEMISCHE WERKE AG | 2 | 1992–1994 |
| VEBA CHEMIE AG | 2 | 1976–1979 |
Locations
| Location | Patents | Span |
|---|---|---|
| Marl-Polsum, DE | 2 | 1979–1992 |
| Marl, DE | 1 | 1994 |
| Westerholt, DE | 1 | 1976 |