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Joachim Semel
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Konigstein, DE
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last 30 patents
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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
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Patent Grant
Method for separating polymer-salt mixtures
Patent number
6,140,598
Issue date
Oct 31, 2000
Ticona GmbH
Klaus Schonert
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL