Inventor · disambiguated record
Erwin Hahn
Also filed as: HAHN ERWIN · HORN DIETER
51 granted patents·469 citations·filing 1978–1995
98Inventor score
Files withBASF AG51
Top patents by PatentIndex Score
51 records- 0196US5470502AFluorescent pigmentsBASF AG·Filed 1994·Granted Nov 28, 1995·77 cites·3 claims
- 0292US5076808ADyeing of polyamide substrates with an organic n-nitroso-hydroxylamine as light stabilizerBASF AG·Filed 1990·Granted Dec 31, 1991·56 cites·5 claims
- 0389US5306815AAzo dyes with a coupling component of the quinoline seriesBASF AG·Filed 1992·Granted Apr 26, 1994·36 cites·4 claims
- 0489US4286959ADisperse dye formulationsBASF AG·Filed 1979·Granted Sep 1, 1981·21 cites·12 claims
- 0587US5410053ARhodamine derivativesBASF AG·Filed 1994·Granted Apr 25, 1995·28 cites·12 claims
- 0687US4846892ATetrachloroperylene-3,4,9,10-tetracarboxylic acid diimide pigment and its useBASF AG·Filed 1987·Granted Jul 11, 1989·20 cites·7 claims
- 0780US4670591APreparation of N-α-alkoxyethylformamidesBASF AG·Filed 1986·Granted Jun 2, 1987·15 cites·8 claims
- 0873US4885396AProcess for the preparation of 2-hydroxy-4-(2'-hydroxyethoxy) benzophenonesBASF AG·Filed 1988·Granted Dec 5, 1989·11 cites·13 claims
- 0973US4668775Aα-methine substituted thiophene monoazo dyeBASF AG·Filed 1985·Granted May 26, 1987·11 cites·9 claims
- 1071US5382476ARecycling of cured aminoplast resinsBASF AG·Filed 1994·Granted Jan 17, 1995·23 cites·3 claims
- 1166US5051504ADoubled triphenylmethane dyes having bis acylpiperazine linkageBASF AG·Filed 1990·Granted Sep 24, 1991·10 cites·2 claims
- 1263US5154763AStabilized aqueous alkyldiketene emulsionsBASF AG·Filed 1991·Granted Oct 13, 1992·9 cites·8 claims
- 1363US4751288AAzo dyes containing 2-amino-3-cyano-5-formylthiophene derivatives as diazo components and substituted aniline compounds as coupling componentsBASF AG·Filed 1986·Granted Jun 14, 1988·7 cites·2 claims
- 1462US4393005ACationic phthalocyanine dyesBASF AG·Filed 1982·Granted Jul 12, 1983·6 cites·9 claims
- 1560US5356938ARecycling of cured aminoplast resinsBASF AG·Filed 1994·Granted Oct 18, 1994·10 cites·4 claims
- 1660US5131981AColoring paperBASF AG·Filed 1991·Granted Jul 21, 1992·21 cites·7 claims
- 1758US4213900ASpray-drying method for the preparation of water-dispersible pulverulent disperse dye formulationsBASF AG·Filed 1978·Granted Jul 22, 1980·5 cites·13 claims
- 1857US4654432APreparation of 2-(hydroxymethyl)-acrylonitrile and 2-(hydroxymethyl)-acrylatesBASF AG·Filed 1985·Granted Mar 31, 1987·5 cites·14 claims
- 1956US5112362ANavy dye mixtures of azo disperse dyes for polyesterBASF AG·Filed 1991·Granted May 12, 1992·5 cites·4 claims
- 2054US5424461APreparation of 1-amino-4-hydroxyanthraquinoneBASF AG·Filed 1993·Granted Jun 13, 1995·4 cites·5 claims
- 2154US4694075ABisazo compounds containing anthranilic acid and thiazole moietiesBASF AG·Filed 1986·Granted Sep 15, 1987·5 cites·13 claims
- 2250US5560961AProcess of making metal-coated melamine/formaldehyde resin fibersBASF AG·Filed 1995·Granted Oct 1, 1996·10 cites·4 claims
- 2350US5298610AThiazoleazo dyes having a coupling component of the diphenylamine seriesBASF AG·Filed 1992·Granted Mar 29, 1994·4 cites·2 claims
- 2450US4970321APreparation of cyclic N,N'-dimethylureasBASF AG·Filed 1989·Granted Nov 13, 1990·3 cites·8 claims
- 2548US4820809AHeterocyclic azo dyesBASF AG·Filed 1988·Granted Apr 11, 1989·3 cites·8 claims
- 2647US4945167APreparation of N-hydroxypyrazolesBASF AG·Filed 1989·Granted Jul 31, 1990·2 cites·12 claims
- 2747US4332955APreparation of transparent pigmentary forms of 4,4',7,7'-tetrachlorothioindigoBASF AG·Filed 1980·Granted Jun 1, 1982·3 cites·16 claims
- 2846US5270456AAzo dyes with A2-aminothiophene dye azo component and a coupling component and coupling component of the diphenylamine seriesBASF AG·Filed 1991·Granted Dec 14, 1993·3 cites·4 claims
- 2945US5371232APreparation of 2-(4-aminophenyl)benzothiazole compoundsBASF AG·Filed 1993·Granted Dec 6, 1994·3 cites·6 claims
- 3045US4213760ADeliming of hidesBASF AG·Filed 1979·Granted Jul 22, 1980·4 cites·3 claims
- 3142US4723023AIsoindoline dyesBASF AG·Filed 1986·Granted Feb 2, 1988·2 cites·13 claims
- 3242US4298534APreparation of brilliant, transparent pigmentary bromo-isoviolanthrone of high tinctorial strengthBASF AG·Filed 1980·Granted Nov 3, 1981·2 cites·11 claims
- 3341US4491544ADyes having a diazo component and an isoquinoline coupling componentBASF AG·Filed 1982·Granted Jan 1, 1985·2 cites·3 claims
- 3441US4377387ADeliming hidesBASF AG·Filed 1982·Granted Mar 22, 1983·3 cites·4 claims
- 3540US4908041ANavy and black dye mixtures: thiophene azo disperse dye and red, yellow or orange disperse dyeBASF AG·Filed 1988·Granted Mar 13, 1990·7 cites·4 claims
- 3640US4764599ADisazo compounds containing an N,N-bis(2-amino-benzoyl)piperazine derivative as the diazo componentBASF AG·Filed 1986·Granted Aug 16, 1988·8 cites·3 claims
- 3740US4652669A2-(1-hydroxycarbalkoxymethyl)-acrylonitriles and 2-(1-hydroxycarbalkoxymethyl)-acrylates and their preparationBASF AG·Filed 1985·Granted Mar 24, 1987·1 cites·2 claims
- 3840US4629616ABasic chromium aluminum sulfates and their preparationBASF AG·Filed 1984·Granted Dec 16, 1986·3 cites·3 claims
- 3939US5332830APreparation of N-hydroxyazolesBASF AG·Filed 1993·Granted Jul 26, 1994·1 cites·5 claims
- 4038US4751314APreparation of tetrachloro-3-iminoisoindolin-1-oneBASF AG·Filed 1986·Granted Jun 14, 1988·1 cites·17 claims
- 4137US5256826APreparation of aromatic carbonyl or sulfonyl compounds with an aryl ether structureBASF AG·Filed 1992·Granted Oct 26, 1993·2 cites·6 claims
- 4237US5144064APreparation of J-acid ureaBASF AG·Filed 1991·Granted Sep 1, 1992·1 cites·12 claims
- 4336US5286401AUse of heterocyclic compounds as bleach activators or optical brighteners in washing and cleaning agentsBASF AG·Filed 1990·Granted Feb 15, 1994·5 cites·5 claims
- 4436US4861898AIsoindoline metal complexesBASF AG·Filed 1987·Granted Aug 29, 1989·1 cites·14 claims
- 4536US4512929A1-Alkyl-2-isocyanatomethyl-isocyanatobenzenes and/or 1-alkyl-4-isocyanatomethyl-isocyanatobenzenesBASF AG·Filed 1983·Granted Apr 23, 1985·0 cites·9 claims
- 4636US4477381ATriaminotriarylmethane colorantsBASF AG·Filed 1982·Granted Oct 16, 1984·1 cites·5 claims
- 4735US5062861ANovel navy and black disperse dye mixtures including amino-phenyl thiophene azo disperse dye and red, yellow or orange disperse dyesBASF AG·Filed 1990·Granted Nov 5, 1991·4 cites·3 claims
- 4834US4322210AAuxiliary, and process, for the soaking of hidesBASF AG·Filed 1980·Granted Mar 30, 1982·1 cites·12 claims
- 4933US5421990AProduction of shining shaped articles coated with zinc or a zinc alloyBASF AG·Filed 1992·Granted Jun 6, 1995·2 cites·5 claims
- 5032US5393828AChemical degradation of cured amino resinsBASF AG·Filed 1993·Granted Feb 28, 1995·2 cites·6 claims
Showing the top 50 of 51 patent records by PatentIndex Score.
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