Inventor

SIEVERS WERNER

DE8 patents

⚠️ This page may combine multiple inventors who share the name “SIEVERS WERNER”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

TICONA GMBH

2 patents

US6414196B1Jul 2, 2002

Process and device for preparing pure formaldehyde

TICONA GMBH2 citations61

US6229053B1May 8, 2001

Method for purification of formaldehyde, use thereof and plastics produced therewith

TICONA GMBH5 citations60

CABOT CORP

1 patent

US6825260B2Nov 30, 2004

Nanoporous interpenetrating organic-inorganic networks

CABOT CORP31 citations92

AVENTIS PHARMA GMBH

1 patent

US6710167B1Mar 23, 2004

Procedure for the chromatographic purification of insulins

AVENTIS PHARMA GMBH16 citations79

HENNIGES ELASTOMER UND KUNSTSO

1 patent

US6401397B2Jun 11, 2002

Sealing profile having a two layer covering element

HENNIGES ELASTOMER UND KUNSTSO14 citations77

DYCKERHOFF & WIDMANN AG

1 patent

US4905896AMar 6, 1990

Railroad roadway for high speed rail-mounted vehicles

DYCKERHOFF & WIDMANN AG19 citations69

HOECHST RES & TECHNOLOGY GMBH

1 patent

US6274749B1Aug 14, 2001

High-temperature resistant sulfonated aromatic polyether ketone cation exchangers and sulfonated poly (phenylene sulfide) cation exchangers as catalysts at reaction temperature above 150° C

HOECHST RES & TECHNOLOGY GMBH6 citations67

HOECHST AG

1 patent

US5800594ASep 1, 1998

Column and processes for purifying solvent-containing gases

HOECHST AG0 citations41