Inventor · disambiguated record
Ludwig Schlafer
Also filed as: SCHLAEFER LUDWIG · SCHLAFER LUDWIG
33 granted patents·246 citations·filing 1973–1992
97Inventor score
Files withHOECHST AG33
Top patents by PatentIndex Score
33 records- 0192US4072463ALiquid preparations of reactive dyestuffsHOECHST AG·Filed 1975·Granted Feb 7, 1978·25 cites·7 claims
- 0291US4149850ALiquid preparations of reactive dyestuffsHOECHST AG·Filed 1978·Granted Apr 17, 1979·21 cites·4 claims
- 0382US4703112AWater-soluble benzothiazole-azo- and phenyl-azo-compounds containing a 2-sulfo-5-acylamino-aniline coupling component, suitable as fibre-reactive dyestuffsHOECHST AG·Filed 1986·Granted Oct 27, 1987·18 cites·15 claims
- 0479US4898933AWater-soluble fiber-reactive aminotriazine and vinylsulfone containing azo dyestuffs having carboxy- or carbamoyl pyridinium groupsHOECHST AG·Filed 1989·Granted Feb 6, 1990·14 cites·4 claims
- 0579US4078884ALiquid preparations of reactive dyestuffsHOECHST AG·Filed 1975·Granted Mar 14, 1978·10 cites·2 claims
- 0674US5003053AWater-soluble monoazo compounds containing a p-aminophenylamino- and chloro- or fluoro-substituted triazinylamino group and a fiber-reactive group selected from the vinylsulfone series, suitable as dyestuffsHOECHST AG·Filed 1990·Granted Mar 26, 1991·13 cites·11 claims
- 0772US4564672AWater-soluble monoazo and disazo compounds containing a fibre-reactive 2-alkoxy-5-chloro-aniline diazo component and copper complexes thereof, useful as dyestuffsHOECHST AG·Filed 1983·Granted Jan 14, 1986·9 cites·12 claims
- 0870US5250670AWater-soluble monoazo compounds containing fiber-reactive groups of vinyl sulfone series as well as triazinyl radical, and process for dyeing with sameHOECHST AG·Filed 1992·Granted Oct 5, 1993·10 cites·17 claims
- 0970US5175263AWater-soluble azo compounds, having a fiber-reactive group of the vinylsulfone series in the diazo component and having a phenoxy- or aralkyloxy-substituted chloro-s-triazinylamino-naphthol sulfonic acid coupling component, suitable as dyestuffsHOECHST AG·Filed 1991·Granted Dec 29, 1992·10 cites·11 claims
- 1070US4473498AWater-soluble, fiber-reactive organic dyestuffs containing a β-chloro-ethylsulfonyl-methyl-benzoic acid amide groupHOECHST AG·Filed 1981·Granted Sep 25, 1984·8 cites·5 claims
- 1170US4035351AWater-soluble monoazo dyestuff containing a phenylene diazo componentHOECHST AG·Filed 1975·Granted Jul 12, 1977·7 cites·5 claims
- 1268US4707545AProcess for the preparation of lithium salts of anionic dyes by reacting the calcium salts with lithium sulfate or lithium hydrogen sulfateHOECHST AG·Filed 1985·Granted Nov 17, 1987·8 cites·18 claims
- 1365US4806127AWater-soluble disazo compounds, containing triazinyl pyridinium group processes for their preparation and their use for dyeing celluloseHOECHST AG·Filed 1987·Granted Feb 21, 1989·8 cites·13 claims
- 1463US4762916AWater-soluble dis-, tris- and tetra-azo compounds containing fiber-reactive chloro-and fluro-triazinyl groups and vinylsulfone groups or derivatives thereof, suitable as dyestuffsHOECHST AG·Filed 1986·Granted Aug 9, 1988·7 cites·17 claims
- 1561US4960872AWater-soluble monoazopyrazolone dyestuffs having fiber reactive groups of the vinylsulfone seriesHOECHST AG·Filed 1988·Granted Oct 2, 1990·6 cites·15 claims
- 1661US4818814AWater-soluble disazo compounds containing the 1-amino-8-hydroxy-3,6-disulfo-naphthalene moiety as a bivalent coupling component and an aniline or naphthylamine compound having a fiber-reactive group, and a 2-sulfo-5-acylamino-anilineHOECHST AG·Filed 1986·Granted Apr 4, 1989·6 cites·10 claims
- 1760US4861344AReactive water-soluble azo dyes containing carboxy- or carbamoyl-pydridinium groups for dyeing textilesHOECHST AG·Filed 1987·Granted Aug 29, 1989·6 cites·8 claims
- 1858US4415333ASolid compositions of water-soluble fiber-reactive dyestuffs and dialkylnaphthalene sulfonic acid and formaldehye condensateHOECHST AG·Filed 1982·Granted Nov 15, 1983·15 cites·18 claims
- 1957US4975539AWater-soluble monoazo compounds having fiber-reactive groups of the vinylsulfone series and a sulfo-substituted benzoylamino naphthol coupling component, suitable as dyestuffsHOECHST AG·Filed 1989·Granted Dec 4, 1990·5 cites·22 claims
- 2057US4000966ADyeing cellulose with aminonaphthyl azobenzene vinyl type reactive dyesHOECHST AG·Filed 1973·Granted Jan 4, 1977·4 cites·17 claims
- 2156US5292871AWater-soluble compounds having a fiber-reactive group of the vinyl sulfone monoazo series bonded to an alkanoylamino of benzoylamino grouping, suitable as dyestuffsHOECHST AG·Filed 1992·Granted Mar 8, 1994·5 cites·7 claims
- 2252US3998586AProcess for the differential dyeing of polyamide fibers and of materials containing themHOECHST AG·Filed 1975·Granted Dec 21, 1976·5 cites·1 claims
- 2351US4963661AWater soluble naphthylazopyrazolone dyestuffs having fiber-reactive groups of the vinylsulfone seriesHOECHST AG·Filed 1988·Granted Oct 16, 1990·4 cites·13 claims
- 2451US4002606AWater-soluble phenyl-azo-naphthyl compoundsHOECHST AG·Filed 1974·Granted Jan 11, 1977·3 cites·9 claims
- 2547US5070189AWater-soluble azo compounds containing a sulfo-naphthol as a coupling component and having fiber-reactive groups of the vinylsulfone series, suitable as dyestuffsHOECHST AG·Filed 1989·Granted Dec 3, 1991·3 cites·19 claims
- 2647US4014865AGolden-yellow fiber-reactive water-soluble monoazo dyestuffsHOECHST AG·Filed 1975·Granted Mar 29, 1977·2 cites·2 claims
- 2746US4845202AWater-soluble disazo compounds containing 3-carboxy or 3-carbamoylpyridium-s-triazinyl groups and fiber-reactive groups of the vinyl sulfone series suitable as dyestuffsHOECHST AG·Filed 1987·Granted Jul 4, 1989·3 cites·16 claims
- 2845US4029644AWater-soluble, fiber-reactive monoazo dyestuffsHOECHST AG·Filed 1975·Granted Jun 14, 1977·2 cites·6 claims
- 2944US4719053ABeta-chloroethylsulfonylmethyl-benzoic halides as intermediatesHOECHST AG·Filed 1983·Granted Jan 12, 1988·3 cites·6 claims
- 3037US4808193AProcess for dyeing hydroxy-containing fiber material with water-soluble dis-azo reactive dye compoundHOECHST AG·Filed 1988·Granted Feb 28, 1989·3 cites·21 claims
- 3135US5102993AWater-soluble disazo compounds, having a fiber-reactive group of the vinylsulfone series, suitable as dyestuffsHOECHST AG·Filed 1990·Granted Apr 7, 1992·1 cites·18 claims
- 3234US5055565AWater-soluble disazo compounds, containing a vinylsulfonyl or β-chloroethylsulfonyl grouping bonded directly or via a methylene group or a lower alkyl amino group to a benzoylamino group, suitable as dyestuffsHOECHST AG·Filed 1990·Granted Oct 8, 1991·1 cites·16 claims
- 3329US3995993AProcess for the differential dyeing of polyamide fibers and of materials containing themHOECHST AG·Filed 1975·Granted Dec 7, 1976·1 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →