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Karlheinz Wembacher
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Darmstadt, DE
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last 30 patents
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Patent Grant
Process for the preparation of ascorbic acid
Patent number
5,744,618
Issue date
Apr 28, 1998
Merck Patent Gesellschaft mit beschrankter Haftung
Ulrich Fechtel
C07 - ORGANIC CHEMISTRY
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Patent Grant
Method for preparing 3-aminopyridines from 3-nitropyridines
Patent number
5,518,588
Issue date
May 21, 1996
Merck Patent Gesellschaft mit beschrankter Haftung
Ulrich Fechtel
C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES APPARATUS THEREFOR