Inventor · disambiguated record
Otto Immel
Also filed as: DANZIGER HARRY · IMMEL OTTO · IMMEL OTTO DR
42 granted patents·506 citations·filing 1974–1997
98Inventor score
Files withBAYER AG42
Top patents by PatentIndex Score
42 records- 0195US4122290AProcess for the preparation of trimethylolalkanesBAYER AG·Filed 1977·Granted Oct 24, 1978·39 cites·7 claims
- 0291US5302774AProcess for the production of bisphenolsBAYER AG·Filed 1993·Granted Apr 12, 1994·39 cites·1 claims
- 0387US4247485AProcess for the preparation of 2,2-dimethylolalkanalsBAYER AG·Filed 1979·Granted Jan 27, 1981·21 cites·4 claims
- 0486US5023226ARuthenium supported catalyst, its preparation and its use in the preparation of substituted or unsubstituted cyclohexylamine and substituted or unsubstituted dicyclohexylamineBAYER AG·Filed 1989·Granted Jun 11, 1991·22 cites·18 claims
- 0586US4148792APurification of caprolactamBAYER AG·Filed 1978·Granted Apr 10, 1979·16 cites·4 claims
- 0686US3966712AProcess for the purification of caprolactamBAYER AG·Filed 1974·Granted Jun 29, 1976·15 cites·3 claims
- 0785US4514578AProcess for the preparation of trimethylolpropaneBAYER AG·Filed 1984·Granted Apr 30, 1985·22 cites·18 claims
- 0885US4181810AProcess for the preparation of propane-1,3-diols, disubstituted in the 2-positionBAYER AG·Filed 1977·Granted Jan 1, 1980·17 cites·11 claims
- 0984US4952549ARuthenium catalyst, process for its preparation and process for the preparation of a mixture of cyclohexylamine and dicyclohexylamine using the ruthenium catalystBAYER AG·Filed 1989·Granted Aug 28, 1990·19 cites·17 claims
- 1082US5304525ACatalyst for the preparation of anilineBAYER AG·Filed 1993·Granted Apr 19, 1994·23 cites·7 claims
- 1178US5300706AProcess for the preparation of d,1-mentholBAYER AG·Filed 1993·Granted Apr 5, 1994·16 cites·20 claims
- 1277US4233247AProcess for the preparation of 2,2-dimethylolalkanalsBAYER AG·Filed 1978·Granted Nov 11, 1980·10 cites·11 claims
- 1376US5322965AProcess for the preparation of a mixture of cyclohexylamine and dicyclohexylamine using a supported noble metal catalystBAYER AG·Filed 1993·Granted Jun 21, 1994·14 cites·9 claims
- 1475US5338861AProcess for the preparation of N-substituted lactamsBAYER AG·Filed 1992·Granted Aug 16, 1994·30 cites·16 claims
- 1573US5338885AProcess for the preparation of diphenylaminesBAYER AG·Filed 1992·Granted Aug 16, 1994·12 cites·11 claims
- 1669US5763350ACatalysts for removing sulfur compounds from industrial gases, a process for their production and their useBAYER AG·Filed 1992·Granted Jun 9, 1998·22 cites·1 claims
- 1767US6140382AProcess for the preparation of isocyanates or isocyanate mixtures useful for the preparation of polyurethane foamsBAYER AG·Filed 1993·Granted Oct 31, 2000·15 cites·16 claims
- 1867US4943549ASupported ruthenium catalyst, its preparation and its use in the preparation of optionally substituted cyclohexylamine and optionally substituted dicyclohexylamineBAYER AG·Filed 1989·Granted Jul 24, 1990·20 cites·9 claims
- 1966US5196592AProcess for the preparation of diphenylaminesBAYER AG·Filed 1991·Granted Mar 23, 1993·9 cites·20 claims
- 2062US5344987AProcess for preparing diphenylaminesBAYER AG·Filed 1993·Granted Sep 6, 1994·7 cites·20 claims
- 2162US4097540AProcess for the preparation of 2-alkyl-2-methylpropane-1,3-diolBAYER AG·Filed 1977·Granted Jun 27, 1978·5 cites·14 claims
- 2259US5248840AProcess for the preparation of hydrooxydiphenylsBAYER AG·Filed 1992·Granted Sep 28, 1993·6 cites·12 claims
- 2358US4141896AProcess for the producing ε-caprolactam from the distillation of cyclohexanone oximeBAYER AG·Filed 1977·Granted Feb 27, 1979·4 cites·2 claims
- 2457US5583251AProcess for the production of isocyanates and for the production of light-colored foams therefromBAYER AG·Filed 1995·Granted Dec 10, 1996·6 cites·4 claims
- 2556US5166440AProcess for the preparation of n-alkylated aromatic aminesBAYER AG·Filed 1990·Granted Nov 24, 1992·5 cites·20 claims
- 2654US4137263AProcess for the evaporation of cyclohexanone oximeBAYER AG·Filed 1977·Granted Jan 30, 1979·6 cites·3 claims
- 2753US5097071ASupported copper catalyst, process for its preparation and process for the preparation of n-alkylated aromatic amines using this copper catalystBAYER AG·Filed 1990·Granted Mar 17, 1992·14 cites·17 claims
- 2853US3948888AProcess for removing boric acid from lactamsBAYER AG·Filed 1974·Granted Apr 6, 1976·3 cites·6 claims
- 2951US4729977ASupported catalyst, process for its preparation and its use for the preparation of hydroxydiphenylBAYER AG·Filed 1986·Granted Mar 8, 1988·11 cites·17 claims
- 3049US5985227AProcess for removing sulfur compounds from industrial gasesBAYER AG·Filed 1997·Granted Nov 16, 1999·11 cites·2 claims
- 3148US4155876ACatalyst regeneration of boric acid on carbon catalystsBAYER AG·Filed 1977·Granted May 22, 1979·7 cites·2 claims
- 3247US5434310AProcess for the preparation of acylbenzenesBAYER AG·Filed 1994·Granted Jul 18, 1995·3 cites·8 claims
- 3347US5371294AProcess for the preparation of a mixture of cyclohexylamine and dicyclohexylamineBAYER AG·Filed 1992·Granted Dec 6, 1994·3 cites·15 claims
- 3446US4902661ARhodium catalysts, process for their preparation and process for the preparation of substituted or unsubstituted diphenylamine by using the rhodium catalystsBAYER AG·Filed 1989·Granted Feb 20, 1990·8 cites·14 claims
- 3540US5386060APalladium catalyst and its use in the preparation of a mixture of optionally substituted cyclohexylamine and optionally substituted dicyclohexylamineBAYER AG·Filed 1992·Granted Jan 31, 1995·5 cites·16 claims
- 3640US5268509AProcess for the preparation of an iron catalyst and a process for the preparation of primary amines by the hydrogenation of nitriles using said iron catalystBAYER AG·Filed 1990·Granted Dec 7, 1993·2 cites·5 claims
- 3737US6111140ARu--Pd halogen-free catalyzers and method for producing cycloaliphatic aminesBAYER AG·Filed 1997·Granted Aug 29, 2000·4 cites·20 claims
- 3837US5552362ACatalysts for the removal of sulfur compounds from industrial gases, a process for their production and their useBAYER AG·Filed 1993·Granted Sep 3, 1996·8 cites·24 claims
- 3936US5245082AProcess for the production of di-(4-aminocyclohexyl)-methane containing 15 to 25% by weight of the trans-trans isomerBAYER AG·Filed 1993·Granted Sep 14, 1993·4 cites·13 claims
- 4032US5174985AProcess for the oxidation of water-insoluble organic compoundsBAYER AG·Filed 1991·Granted Dec 29, 1992·3 cites·4 claims
- 4130US4028347AMethod for processing lactam residues which contain boric acidBAYER AG·Filed 1975·Granted Jun 7, 1977·0 cites·6 claims
- 4229US4157986AAbrasion resistant catalystBAYER AG·Filed 1977·Granted Jun 12, 1979·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →