Werner Sievers

Follow

Person

Frankfurt, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Nanoporous interpenetrating organic-inorganic networks
- Patent number 6,825,260
- Issue date Nov 30, 2004
- Cabot Corporation
- Werner Sievers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Procedure for the chromatographic purification of insulins
- Patent number 6,710,167
- Issue date Mar 23, 2004
- Aventis Pharma Deutschland GmbH
- Werner Sievers
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Process and device for preparing pure formaldehyde
- Patent number 6,414,196
- Issue date Jul 2, 2002
- Ticona GmbH
- Werner Sievers
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
High-temperature resistant sulfonated aromatic polyether ketone cat...
- Patent number 6,274,749
- Issue date Aug 14, 2001
- Hoechst Research & Technology GmbH & Co. KG
- Werner Sievers
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Method for purification of formaldehyde, use thereof and plastics p...
- Patent number 6,229,053
- Issue date May 8, 2001
- Ticona GmbH
- Werner Sievers
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Column and processes for purifying solvent-containing gases
- Patent number 5,800,594
- Issue date Sep 1, 1998
- Hoechst Aktiengesellschaft
- Werner Sievers
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Process and apparatus for preparing pure formaldehyde
- Publication number 20020193639
- Publication date Dec 19, 2002
- Ticona GmbH
- Werner Sievers
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Nanoporous interpenetrating organic-inorganic networks
- Publication number 20020032272
- Publication date Mar 14, 2002
- Werner Sievers
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...