Inventor
Heiko Beckhaus
Inventor
Leverkusen, 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 compounds42%
C01BNon-metallic elements25%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
B01DSeparation8%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry8%
PatentTitleYear
6,332,949'Method for upgrading used sulfuric acids'20016,242,649'Continuous method for producing aromatic amines'20016,156,288'Process for purifying and concentrating spent sulfuric acids'20005,779,995'Sludge phase reactor and process for performing sludge phase reactions'19985,728,880'Process for the separation of high-boiling materials from the reaction mixture generated during the production of diaminotoluene'19985,001,286'Process for separating sulphuric acid and nitric acid from dinitrotoluene mixtures obtained during the nitration of toluene'19914,857,281'Pauling boiler and process for the concentration of sulphuric acid'19894,720,326'Process for working-up aqueous amine solutions'1988Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1988–2001Patents assigned to BAYER AG (8)· patent assignee history
1988Based in Brunsbuttel, DE· patent location history
1989–2001Based in Leverkusen, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 8 | 1988–2001 |
Locations
| Location | Patents | Span |
|---|---|---|
| Leverkusen, DE | 7 | 1989–2001 |
| Brunsbuttel, DE | 1 | 1988 |