Inventor
Stephan Ehlers
Inventor
West Chester, PA, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B01Jprimary
B01JChemical or physical processes, e.g. catalysis or colloid chemistry46%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds46%
C01CAmmonia8%
PatentTitleYear
6,919,293'Double metal cyanide catalysts for producing polyether polyols'20056,835,687'Method for producing double metal cyanide (DMC) catalysts'20046,780,813'Process for producing DMC catalysts'20046,776,925'Process for the preparation of polyether polyols'20046,670,406'Process for producing polyether polyols'20036,486,361'Method for preparing polyether polyols'2002Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2002–2005Patents assigned to BAYER AG (6)· patent assignee history
2002–2005Based in West Chester, PA, US· patent location history
2003–2004Patents assigned to BAYER POLYMERS LLC (2)· patent assignee history
2003Based in Newtown Square, PA, US· patent location history
2004Based in Kln, DE· patent location history
2004Based in Leverkusen, DE· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| BAYER AG | 6 | 2002–2005 |
| BAYER POLYMERS LLC | 2 | 2003–2004 |
Locations
| Location | Patents | Span |
|---|---|---|
| West Chester, Pennsylvania, US | 3 | 2002–2005 |
| Kln, DE | 1 | 2004 |
| Leverkusen, DE | 1 | 2004 |
| Newtown Square, Pennsylvania, US | 1 | 2003 |