Inventor
Hansjorg Hey
Inventor
Hofheim, DE
Overview
Patents· 8 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds43%
C07DHeterocyclic compounds21%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry14%
C01BNon-metallic elements7%
Y02PClimate change mitigation technologies in the production or processing of goods7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
PatentTitleYear
4,818,347'Process for the isolation of vinyl acetate'19894,409,400'Process for the preparation of cyclohexane-1,3-dione from .delta.-ketohexanoic acid ester'19834,250,336'Process for the manufacture of resorcinols from .delta.-ketocarboxylic acid esters'19814,110,372'Process for the purification of carboxylic acids'19784,072,660'Process for the manufacture of resorcinols'19784,041,049'Process for the manufacture of cyclohexane-1,3-diones and 6-alkyl-3,4-dihydro-2-pyranones'19774,041,039'Process for preparing 2-ethyl-pyridine'19773,957,792'Process for preparing 2-ethyl-pyridine'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1989Patents assigned to HOECHST AG (8)· patent assignee history
1976–1977Based in Hofheim-Langenhain, DE· patent location history
1977–1989Based in Hofheim, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOECHST AG | 8 | 1976–1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hofheim, DE | 6 | 1977–1989 |
| Hofheim-Langenhain, DE | 2 | 1976–1977 |