Inventor · disambiguated record
Leopold Hupfer
Also filed as: HUPFER LEOPOLD
45 granted patents·675 citations·filing 1974–1995
98Inventor score
Files withBASF AG45
Top patents by PatentIndex Score
45 records- 0195US4874899APreparation of unsaturated and saturated ketonesBASF AG·Filed 1988·Granted Oct 17, 1989·56 cites·5 claims
- 0293US4902828ARecovery of aqueous glyoxylic acid solutionsBASF AG·Filed 1984·Granted Feb 20, 1990·46 cites·9 claims
- 0392US4429155APreparation of aromatic aminesBASF AG·Filed 1981·Granted Jan 31, 1984·35 cites·6 claims
- 0491US4393251APreparation of propanediols using a copper-and zinc containing hydrogenation catalystBASF AG·Filed 1982·Granted Jul 12, 1983·35 cites·9 claims
- 0590US4068077AManufacture of N-substituted tetrahydro-1,4-oxazinesBASF AG·Filed 1976·Granted Jan 10, 1978·21 cites·5 claims
- 0689US5294740APreparation of formic acid by thermal cleavage of quaternary ammonium formatesBASF AG·Filed 1993·Granted Mar 15, 1994·32 cites·5 claims
- 0789US4885395APreparation of alpha, beta-unsaturated ketonesBASF AG·Filed 1987·Granted Dec 5, 1989·54 cites·13 claims
- 0886US4594461APreparation of trimethylolalkanes from alkanals and formaldehydeBASF AG·Filed 1984·Granted Jun 10, 1986·21 cites·11 claims
- 0984US4386018AHydrogenation catalysts for the preparation of propanediolsBASF AG·Filed 1981·Granted May 31, 1983·34 cites·8 claims
- 1082US4212972APreparation of cis-2,6-dimethylmorpholineBASF AG·Filed 1979·Granted Jul 15, 1980·10 cites·2 claims
- 1181US4450277APreparation of 1-substituted imidazolesBASF AG·Filed 1980·Granted May 22, 1984·13 cites·3 claims
- 1280US4990684APreparation of phenylacetaldehydesBASF AG·Filed 1989·Granted Feb 5, 1991·15 cites·10 claims
- 1379US5200560APreparation of carboxylic chloridesBASF AG·Filed 1992·Granted Apr 6, 1993·18 cites·13 claims
- 1478US5200163ARemoval of phosgene from off-gasesBASF AG·Filed 1991·Granted Apr 6, 1993·46 cites·7 claims
- 1577US4386219AHydrogenation catalysts for the preparation of propanediols and processes for the preparation of propanediols, using such catalystsBASF AG·Filed 1982·Granted May 31, 1983·25 cites·14 claims
- 1677US4283534AReductive alkylation of nitrogen heterocyclesBASF AG·Filed 1980·Granted Aug 11, 1981·10 cites·1 claims
- 1777US4105669AManufacture of 2-amino-1-alcoholsBASF AG·Filed 1977·Granted Aug 8, 1978·8 cites·2 claims
- 1875US5149861ARecovery of trialkylamines and methyl formate from mixtures obtained in the preparation of trimethylolalkanesBASF AG·Filed 1991·Granted Sep 22, 1992·16 cites·13 claims
- 1973US3972938AManufacture of hexamethylene diamineBASF AG·Filed 1974·Granted Aug 3, 1976·10 cites·5 claims
- 2072US4866210APreparation of ketonesBASF AG·Filed 1988·Granted Sep 12, 1989·10 cites·4 claims
- 2172US4538009APreparation of substituted phenolsBASF AG·Filed 1984·Granted Aug 27, 1985·10 cites·14 claims
- 2271US4347388A3,6-Dimethyl-3-hydroxy-oct-1-ynes and -oct-1-enes, derivatives of these, and their use as scents, and in the preparation of 3,6-dimethyl-3-hydroxy-octaneBASF AG·Filed 1981·Granted Aug 31, 1982·9 cites·3 claims
- 2370US5705683ACarbonylation of olefinsBASF AG·Filed 1995·Granted Jan 6, 1998·11 cites·5 claims
- 2469US5401873APreparation of methyl formateBASF AG·Filed 1994·Granted Mar 28, 1995·12 cites·7 claims
- 2568US4298733APreparation of cis-2,6-dimethylmorpholineBASF AG·Filed 1980·Granted Nov 3, 1981·6 cites·2 claims
- 2665US5196611APreparation of alkyl, alkenyl, and alkynyl chloridesBASF AG·Filed 1992·Granted Mar 23, 1993·8 cites·1 claims
- 2764US4728435ADecolorization of aqueous glyoxal solutionsBASF AG·Filed 1986·Granted Mar 1, 1988·9 cites·14 claims
- 2863US5225602APhenylacetaldehydes and the preparation of phenylacetaldehydesBASF AG·Filed 1989·Granted Jul 6, 1993·13 cites·6 claims
- 2959US4355180APreparation of primary aromatic amines from cyclic alcohols and/or ketonesBASF AG·Filed 1981·Granted Oct 19, 1982·5 cites·8 claims
- 3058US4812593APreparation of bifunctional compoundsBASF AG·Filed 1987·Granted Mar 14, 1989·5 cites·12 claims
- 3155US4943667APreparation of phenylethanolsBASF AG·Filed 1989·Granted Jul 24, 1990·9 cites·8 claims
- 3254US4891451APreparation of vinyl ethersBASF AG·Filed 1988·Granted Jan 2, 1990·9 cites·3 claims
- 3354US4814513APreparation of carbonyl compoundsBASF AG·Filed 1987·Granted Mar 21, 1989·5 cites·10 claims
- 3454US4677230APreparation of 2-methyl-2-alkenalsBASF AG·Filed 1986·Granted Jun 30, 1987·4 cites·14 claims
- 3553US4521632APurification of aqueous glyoxal solutionsBASF AG·Filed 1984·Granted Jun 4, 1985·4 cites·14 claims
- 3649US4980511APreparation of aldehydes and/or ketones BU conversion of epoxidesBASF AG·Filed 1987·Granted Dec 25, 1990·10 cites·2 claims
- 3748US5130435APreparation of vinyl ethersBASF AG·Filed 1990·Granted Jul 14, 1992·8 cites·4 claims
- 3846US4196147AManufacture of N-alkylanilinesBASF AG·Filed 1977·Granted Apr 1, 1980·2 cites·7 claims
- 3944US4968831APreparation of α-ketocarboxylic estersBASF AG·Filed 1989·Granted Nov 6, 1990·2 cites·8 claims
- 4044US4960954APreparation of enol ethersBASF AG·Filed 1989·Granted Oct 2, 1990·5 cites·14 claims
- 4140US4851584APreparation of carbonyl compoundsBASF AG·Filed 1988·Granted Jul 25, 1989·2 cites·9 claims
- 4238US5000832APurification of aqueous glyoxal solutionsBASF AG·Filed 1989·Granted Mar 19, 1991·6 cites·12 claims
- 4336US4769200ACompounding crystalline organic materialsBASF AG·Filed 1986·Granted Sep 6, 1988·6 cites·3 claims
- 4433US4698434APreparation of hydroxymethylimidazolesBASF AG·Filed 1986·Granted Oct 6, 1987·0 cites·6 claims
- 4532US4824973APreparation of 4-formyltetrahydropyransBASF AG·Filed 1987·Granted Apr 25, 1989·0 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →