Inventor
Werner Sievers
Inventor
Frankfurt am Main, DE
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C07Cprimary
C07CAcyclic or carbocyclic compounds23%
B01DSeparation15%
A61PSpecific therapeutic activity of chemical compounds or medicinal preparations8%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry8%
B60JWindows, windscreens, non-fixed roofs, doors, or similar devices for vehicles8%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for8%
C07DHeterocyclic compounds8%
C07KPeptides8%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds8%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients8%
PatentTitleYear
6,825,260'Nanoporous interpenetrating organic-inorganic networks'20046,710,167'Procedure for the chromatographic purification of insulins'20046,414,196'Process and device for preparing pure formaldehyde'20026,401,397'Sealing profile having a two layer covering element'20026,274,749'High-temperature resistant sulfonated aromatic polyether ketone cation exchangers and sulfonated poly (phenylene sulfide) cation exchangers as catalysts at reaction temperature above 150.degree. C'20016,229,053'Method for purification of formaldehyde, use thereof and plastics produced therewith'20015,800,594'Column and processes for purifying solvent-containing gases'1998Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1998Patents assigned to HOECHST AG (1)· patent assignee history
1998–2004Based in Frankfurt am Main, DE· patent location history
2001–2002Patents assigned to TICONA GMBH (2)· patent assignee history
2002Patents assigned to HENNIGES ELASTOMER UND KUNSTSO (1)· patent assignee history
2002Based in Laatzen, DE· patent location history
2004Patents assigned to AVENTIS PHARMA GMBH (1)· patent assignee history
2004Patents assigned to CABOT CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| TICONA GMBH | 2 | 2001–2002 |
| AVENTIS PHARMA GMBH | 1 | 2004 |
| CABOT CORP | 1 | 2004 |
| HENNIGES ELASTOMER UND KUNSTSO | 1 | 2002 |
| HOECHST AG | 1 | 1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Frankfurt am Main, DE | 6 | 1998–2004 |
| Laatzen, DE | 1 | 2002 |