Inventor
Wilhelm Heitmann
Inventor
Herne, DE
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds47%
B01DSeparation13%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry13%
C01CAmmonia7%
Y02CCapture, storage, sequestration or disposal of greenhouse gases [ghg]7%
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
5,427,759'Method of recovering ammonia and compounds from offgases contaminated with organic materials, carbon dioxide, and ammonia'19955,360,931'Continuous multi-stage process for the preparation of (cyclo) aliphatic diisocyanates'19944,541,897'Distillation process for the production of dehydrated ethanol'19854,380,509'Method for producing a catalyst for the hydration of olefins'19834,351,970'Method of preparing alcohols having two to four carbon atoms by catalytic hydration of olefins'19824,329,257'Method of producing a catalyst from clay minerals for the hydration of olefins'19824,150,245'Hydration of olefins using vaporized phosphoric acid'19794,036,890'Preparation of organic hydroperoxides'19773,960,672'Continuous distillation process for purifying alkanols'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1982Patents assigned to VEBA CHEMIE AG (4)· patent assignee history
1976–1995Based in Herne, DE· patent location history
1982–1995Patents assigned to HUELS CHEMISCHE WERKE AG (5)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HUELS CHEMISCHE WERKE AG | 5 | 1982–1995 |
| VEBA CHEMIE AG | 4 | 1976–1982 |
Locations
| Location | Patents | Span |
|---|---|---|
| Herne, DE | 9 | 1976–1995 |