HG

Holger Geissler

CL Clariant: 8 patents #32 of 540Top 6%
A& Aventis Research & Technologies Gmbh &: 2 patents #24 of 131Top 20%
CG Celanese Gmbh: 2 patents #111 of 478Top 25%
Hoechst Gmbh: 2 patents #1,574 of 4,020Top 40%
AG Axiva Gmbh: 1 patents #11 of 39Top 30%
Overall (All Time): #265,302 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
12341899 Method and system for information transmission 2025-06-24
6653502 Process for preparing phenylacetic acid derivatives 2003-11-25
6566521 Valeraldehyde and process for its preparation Petrus W. N. M. Van Leeuwen, Paul Kamer, Lars Anders Van Der Veen 2003-05-20
6521097 Process for separating hydrogen chloride from a mixture comprising an N-alkyl-2-pyrrolidone and hydrogen chloride 2003-02-18
6500956 Method for the catalytic production of substituted bipyridyl derivatives Peter Gross 2002-12-31
6392047 Process for preparing biaryls in the presence of palladophosphacyclobutane catalysts Steffen Haber, Andreas Meudt, Frank Vollmueller, Stefan Scherer 2002-05-21
6353136 Process for preparing aromatic amines in the presence of palladaphosphacyclobutane catalysts Steffen Haber, Stefan Scherer, Andreas Meudt, Frank Vollmueller 2002-03-05
6348603 Process for the preparation of isochroman-3-ones Ralf Pfirmann 2002-02-19
6342605 Valeraldehyde and process for its preparation Petrus W. N. M. Van Leeuwen, Paul Kamer, Lars Anders Van Der Veen 2002-01-29
6215006 Process for the preparation of 3-isochromanoes by cyclization of o-chloromethylphenylacetic acids 2001-04-10
6194627 Process for preparing aromatic olefins by using palladaphosphacyclobutanes as catalysts Peter Gross, Bianca Guckes, Michael Klimpel 2001-02-27
6162753 Process for recovering cobalt carbonyl catalysts used to produced N-acyl-alpha-amino acid derivatives by amidocarbonylation Peter Gross, Sandra Bogdanovic 2000-12-19
6084114 Dipalladaphosphacyclobutanes and a process for preparing the same Peter Gross, Bianca Guckes 2000-07-04
6075152 Process for preparing isochroman-3-ones Ralf Pfirmann 2000-06-13
6002020 Process for the catalytic preparation of 3-isochromanones from phthalans Daniel Decker, Peter Gross 1999-12-14
5831128 Synthesis of aromatic amines from chloroamatics Matthias Beller, Thomas Riermeier, Claus-Peter Reisinger, Wolfgang Anton Herrmann 1998-11-03
5756413 Process for recovering cobalt carbonyl catalysts used in the preparation of N-acyl-.alpha.-amino acid derivates by amidocarbonylation Sandra Bogdanovic, Klaus Raab, Matthias Beller, Hartmut Fischer 1998-05-26