Inventor
Gunter Hammen
Inventor
Rommerskirchen, DE
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds75%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds25%
PatentTitleYear
5,925,783'Process for the preparation of isocyanates'19995,347,034'Process for the production of poly(O-alkylurethanes) of the diphenyl methane series'19945,043,471'Process for the preparation of polyisocyanates'19914,692,550'Continuous process for thermal splitting of carbamic acid esters'19874,675,437'Cycloaliphatic triisocyanates'19874,603,189'Triisocyanates and a process for their preparation'1986Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1986–1999Patents assigned to BAYER AG (6)· patent assignee history
1986–1999Based in Rommerskirchen, DE· patent location history
1987Based in Dormagen, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 6 | 1986–1999 |
Locations
| Location | Patents | Span |
|---|---|---|
| Rommerskirchen, DE | 5 | 1986–1999 |
| Dormagen, DE | 1 | 1987 |