Inventor
Michael Zolffel
Inventor
Marl, 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%
C07DHeterocyclic compounds20%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%
PatentTitleYear
5,177,229'Process for the preparation of esters'19934,456,778'Separating the chlorination products from the reaction gases obtained by the chlorination of methane and methyl chloride'19844,332,645'Process for the separation of methanol from mixtures of tetrahydrofuran with methanol and water'19824,219,678'Process for preparing pure methyl tert.-butyl ether'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980–1993Patents assigned to HUELS CHEMISCHE WERKE AG (4)· patent assignee history
1980–1993Based 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 | 4 | 1980–1993 |
Locations
| Location | Patents | Span |
|---|---|---|
| Marl, DE | 4 | 1980–1993 |