Inventor
Dirk Manzel
Inventor
Moers, DE
Overview
Patents· 5 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds42%
B01DSeparation17%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry17%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds17%
C01BNon-metallic elements8%
PatentTitleYear
10,947,187Method for producing methylene-diphenylene-diisocyanates and polymethylene-polyphenylene-polyisocyanates202110,577,311Method for producing isocyanates202010,364,214Method for producing isocyanates201910,280,135Method for producing isocyanates20199,815,703'Method for starting up and shutting down a phosgene generator'2017Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2017–2020Patents assigned to COVESTRO DEUTSCHLAND AG (4)· patent assignee history
2017–2021Based in Moers, DE· patent location history
2021Patents assigned to COVESTRO INTELLECTUAL PROPERTY GMBH & CO KG (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| COVESTRO DEUTSCHLAND AG | 4 | 2017–2020 |
| COVESTRO INTELLECTUAL PROPERTY GMBH & CO KG | 1 | 2021 |
Locations
| Location | Patents | Span |
|---|---|---|
| Moers, DE | 5 | 2017–2021 |