Inventor · disambiguated record
Holger Geissler
Also filed as: GEISSLER HOLGER
17 granted patents·3 pending applications·205 citations·filing 1996–2020
93Inventor score
Files withCLARIANT GMBH8CELANESE GMBH3AVENTIS RES & TECH GMBH & CO2HOECHST AG2AVENTIS RES & TECHNOLOGY GMBH1
Top patents by PatentIndex Score
20 records- 0192US6392047B1Process for preparing biaryls in the presence of palladophosphacyclobutane catalystsCLARIANT GMBH·Filed 2000·Granted May 21, 2002·77 cites·13 claims
- 0279US5831128ASynthesis of aromatic amines from chloroamaticsHOECHST AG·Filed 1997·Granted Nov 3, 1998·21 cites·12 claims
- 0372US6653502B2Process for preparing phenylacetic acid derivativesCLARIANT GMBH·Filed 2001·Granted Nov 25, 2003·6 cites·16 claims
- 0466US6521097B2Process for separating hydrogen chloride from a mixture comprising an N-alkyl-2-pyrrolidone and hydrogen chlorideCLARIANT GMBH·Filed 2001·Granted Feb 18, 2003·7 cites·7 claims
- 0566US6215006B1Process for the preparation of 3-isochromanoes by cyclization of o-chloromethylphenylacetic acidsCLARIANT GMBH·Filed 2000·Granted Apr 10, 2001·3 cites·9 claims
- 0663US6342605B1Valeraldehyde and process for its preparationCELANESE GMBH·Filed 1999·Granted Jan 29, 2002·7 cites·16 claims
- 0763US6075152AProcess for preparing isochroman-3-onesCLARIANT GMBH·Filed 1999·Granted Jun 13, 2000·9 cites·17 claims
- 0861US6194627B1Process for preparing aromatic olefins by using palladaphosphacyclobutanes as catalystsAVENTIS RES & TECHNOLOGY GMBH·Filed 1997·Granted Feb 27, 2001·29 cites·16 claims
- 0956US6353136B1Process for preparing aromatic amines in the presence of palladaphosphacyclobutane catalystsCLARIANT GMBH·Filed 2000·Granted Mar 5, 2002·2 cites·11 claims
- 1055US6500956B1Method for the catalytic production of substituted bipyridyl derivativesAXIVA GMBH·Filed 1999·Granted Dec 31, 2002·12 cites·30 claims
- 1155US6002020AProcess for the catalytic preparation of 3-isochromanones from phthalansCLARIANT GMBH·Filed 1999·Granted Dec 14, 1999·6 cites·15 claims
- 1249US5756413AProcess for recovering cobalt carbonyl catalysts used in the preparation of N-acyl-α-amino acid derivates by amidocarbonylationHOECHST AG·Filed 1996·Granted May 26, 1998·13 cites·19 claims
- 1342US6566521B2Valeraldehyde and process for its preparationCELANESE GMBH·Filed 2001·Granted May 20, 2003·0 cites·19 claims
- 1441US2003078436A1Process for the catalytic preparation of N-acylglycine derivativesFiled 2002·Application pending·0 cites
- 1540US2003149267A1Valeraldehyde and process for its preparationCELANESE GMBH·Filed 2002·Application pending·0 cites
- 1639US6348603B1Process for the preparation of isochroman-3-onesCLARIANT GMBH·Filed 2000·Granted Feb 19, 2002·0 cites·16 claims
- 1739US6084114ADipalladaphosphacyclobutanes and a process for preparing the sameAVENTIS RES & TECH GMBH & CO·Filed 1997·Granted Jul 4, 2000·8 cites·16 claims
- 1836US6162753AProcess for recovering cobalt carbonyl catalysts used to produced N-acyl-alpha-amino acid derivatives by amidocarbonylationAVENTIS RES & TECH GMBH & CO·Filed 1997·Granted Dec 19, 2000·5 cites·16 claims
- 1934US12341899B2Method and system for information transmissionIpOcean Global GmbH·Filed 2020·Granted Jun 24, 2025·0 cites·17 claims
- 2028US2001007911A1Catalytic preparation process of n-acylglycine derivativesFiled 1997·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →