Inventor · disambiguated record
Helmut Bahrmann
Also filed as: BAHRMANN HELMUT
77 granted patents·2 pending applications·767 citations·filing 1979–2006
99Inventor score
Top patents by PatentIndex Score
79 records- 0196US5347045ASulfonated 2,2'-bis (diphenylphosphinomethyl)-1,1'-binaphthalenes, process for their preparation and their use in a process for the hydroformylation of olefinically unsaturated compoundsHOECHST AG·Filed 1993·Granted Sep 13, 1994·57 cites·1 claims
- 0290US5118867AProcess for the preparation of aldehydesHOECHST AG·Filed 1990·Granted Jun 2, 1992·43 cites·29 claims
- 0388US5312951A3,4-dimethyl-2,5,6-tris(p-sulfonatophenyl)-1-phosphanorbornadiene, process for the preparation thereof and process for the hydroformylation of olefinnically unsaturated compoundsHOECHST AG·Filed 1993·Granted May 17, 1994·32 cites·6 claims
- 0485US6482972B1Isomeric nonanols and decanols, their preparation, phthalic esters obtained therefrom and their use as plasticizersHOECHST AG·Filed 1995·Granted Nov 19, 2002·45 cites·18 claims
- 0584US6472565B1Method for producing aldehydesCELANESE CHEM EUROPE GMBH·Filed 2000·Granted Oct 29, 2002·23 cites·15 claims
- 0684US4578523AProcess for the preparation of aldehydesRUHRCHEMIE AG·Filed 1985·Granted Mar 25, 1986·21 cites·5 claims
- 0783US5268514ADecyl alcohol mixtures, phthalic esters obtainable therefrom and their use as plasticizersHOECHST AG·Filed 1993·Granted Dec 7, 1993·19 cites·10 claims
- 0880US6703507B2Ionic liquids and production and use thereofCELANESE CHEM EUROPE GMBH·Filed 2000·Granted Mar 9, 2004·22 cites·19 claims
- 0980US4593126AProcess for preparing aldehydesRUHRCHEMIE AG·Filed 1985·Granted Jun 3, 1986·16 cites·13 claims
- 1079US5583250AMixtures of isomeric decyl alcohols, phthalates obtainable therefrom, and their use as plasticizersHOECHST AG·Filed 1995·Granted Dec 10, 1996·15 cites·8 claims
- 1176US5463147ADecyl alcohol mixtures, phthalic esters obtainable therefrom and their use as plasticizersHOECHST AG·Filed 1994·Granted Oct 31, 1995·13 cites·8 claims
- 1276US4795727ARhodium catalysts and methods of preparation and use thereofRUHRCHEMIE AG·Filed 1987·Granted Jan 3, 1989·12 cites·10 claims
- 1376US4740626AProcess for the preparation of aldehydesRUHRCHEMIE AG·Filed 1986·Granted Apr 26, 1988·14 cites·16 claims
- 1475US5091350AProcess for hydroformylation with rhodium catalysts and the separation of rhodium therefromHOECHST AG·Filed 1990·Granted Feb 25, 1992·20 cites·10 claims
- 1575US4723047AProcess for the preparation of nonadecanediolsRUHRCHEMIE AG·Filed 1986·Granted Feb 2, 1988·12 cites·14 claims
- 1673US6864387B2Process for preparing sulfonated arylphosphinesCELANESE CHEM EUROPE GMBH·Filed 2003·Granted Mar 8, 2005·9 cites·11 claims
- 1773US5817884AProcess for preparing aldehydesHOECHST AG·Filed 1997·Granted Oct 6, 1998·13 cites·18 claims
- 1873US5451698AProcess for the preparation of sulfonated arylphosphinesHOECHST AG·Filed 1994·Granted Sep 19, 1995·15 cites·21 claims
- 1973US5369162ADecyl alcohol mixtures, phthalic esters obtainable therefrom and their use as plasticizersHOECHST AG·Filed 1993·Granted Nov 29, 1994·11 cites·2 claims
- 2073US4710321AQuaternary ammonium salts of sulfonated triarylphosphines and process for the production thereofRUHRCHEMIE AG·Filed 1987·Granted Dec 1, 1987·10 cites·20 claims
- 2172US5274183AWater-soluble sulfonated diphosphinesHOECHST AG·Filed 1992·Granted Dec 28, 1993·18 cites·12 claims
- 2271US4472526AProcess for producing ethanol and n-propanol from methanol and synthesis gasRUHRCHEMIE AG·Filed 1982·Granted Sep 18, 1984·8 cites·7 claims
- 2370US6610881B1Method for producing sulfonated aryl phosphinesCELANESE CHEMICALS EUROP·Filed 2000·Granted Aug 26, 2003·10 cites·11 claims
- 2470US5661204AMixtures of isomeric decyl alcohols, phthalates obtainable therefrom, and their use as plasticizersHOECHST AG·Filed 1995·Granted Aug 26, 1997·9 cites·2 claims
- 2569US5808168AProcess for the hydroformylation of olefinically unsaturated compoundsHOECHST AG·Filed 1997·Granted Sep 15, 1998·12 cites·23 claims
- 2669US4731485AProcess for hydroformylation with rhodium catalysts and the separation of rhodium therefromRUHRCHEMIE AG·Filed 1987·Granted Mar 15, 1988·10 cites·11 claims
- 2767US4317945AProcess for preparing 2-methyl-2-sec.butyl-1,3-propanediolRUHRCHEMIE AG·Filed 1980·Granted Mar 2, 1982·8 cites·18 claims
- 2866US4879418AProcess for the preparation of aldehydesHOECHST AG·Filed 1988·Granted Nov 7, 1989·8 cites·36 claims
- 2965US5565398ASulfonated 2,2'-bis (Diphenylphosphinomethyl)-1,1'-binaphthalenes, process for their preparation and their use in a process for the hydroformylation of olefinically unsaturated compoundsHOECHST AG·Filed 1995·Granted Oct 15, 1996·20 cites·3 claims
- 3065US4258214AProcess for the production of aldehydesRUHRCHEMIE AG·Filed 1979·Granted Mar 24, 1981·6 cites·9 claims
- 3164US5481045ASulfonated 2,2'-bis (diphenylphosphinomethyl)-1,1'-binaphthalenes, process for their preparation and their use in a process for the hydroformylation of olefinically unsaturated compoundsHOECHST AG·Filed 1994·Granted Jan 2, 1996·17 cites·13 claims
- 3264US4808757AProcess for the preparation of aldehydesRUHRCHEMIE AG·Filed 1988·Granted Feb 28, 1989·7 cites·16 claims
- 3363US5756854AProcess for the hydroformylation of olefinically unsaturated compoundsHOECHST AG·Filed 1996·Granted May 26, 1998·22 cites·28 claims
- 3463US5462986ADecyl alcohol mixtures, phthalic esters obtainable therefrom and their use as placticizersHOECHST AG·Filed 1995·Granted Oct 31, 1995·8 cites·17 claims
- 3561US6051743AProcess for the preparation of predominantly unbranched higher primary alcoholsHOECHST AG·Filed 1993·Granted Apr 18, 2000·7 cites·11 claims
- 3659US5382716ADecyl alcohol mixtures, phthalic obtainable therefrom, and their use as plasticizersHOECHST AG·Filed 1993·Granted Jan 17, 1995·6 cites·11 claims
- 3759US5126475AProcess for the preparation of organic phosphites which are stable to hydrolysisHOECHST AG·Filed 1990·Granted Jun 30, 1992·8 cites·15 claims
- 3857US5174899AProcess for separating organometallic compounds and/or metal carbonyls from their solutions in organic mediaHOECHST AG·Filed 1991·Granted Dec 29, 1992·16 cites·49 claims
- 3956US5041228AProcess for separating mixtures of substances contained in an aqueous or aqueous/organic solutionHOECHST AG·Filed 1989·Granted Aug 20, 1991·5 cites·48 claims
- 4055US5200380AProcess for producing aldehydesHOECHST AG·Filed 1991·Granted Apr 6, 1993·5 cites·2 claims
- 4155US4424383AProcess for producing ethanol and n-propanol from methanolRUHRCHEMIE AG·Filed 1981·Granted Jan 3, 1984·11 cites·13 claims
- 4255US2006276669A1Process for preparing sulfonated arylphosphinesCELANESE CHEM EUROPE GMBH·Filed 2006·Application pending·0 cites
- 4353US6054617ANitro compound-reducing processCLARIANT GMBH·Filed 1996·Granted Apr 25, 2000·5 cites·10 claims
- 4452US6103908ANonaqueous ionic ligand liquids, process for preparing them and their use as catalyst constituentsCELANESE GMBH·Filed 1998·Granted Aug 15, 2000·16 cites·20 claims
- 4551US5223648AProcess for producing aldehydesHOECHST AG·Filed 1992·Granted Jun 29, 1993·13 cites·20 claims
- 4650US7102034B2Process for preparing sulfonated arylphosphinesCELANESE CHEM EUROPE GMBH·Filed 2004·Granted Sep 5, 2006·0 cites·1 claims
- 4750US5516948AProcess for making a mixture of isomeric decyl alcoholsHOECHST AG·Filed 1995·Granted May 14, 1996·7 cites·7 claims
- 4849US6114272ACatalyst of rhodium and a non-aqueous ligand liquid for preparation of aldehydesCELANESE GMBH·Filed 1999·Granted Sep 5, 2000·10 cites·10 claims
- 4949US5847200ASubstituted diphosphines and a process for their preparationHOECHST AG·Filed 1997·Granted Dec 8, 1998·4 cites·13 claims
- 5049US5367107AProcess for the preparation of aldehydesHOECHST AG·Filed 1993·Granted Nov 22, 1994·3 cites·8 claims
Showing the top 50 of 79 patent records by PatentIndex Score.
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