Inventor · disambiguated record
Rainer Hamprecht
Also filed as: BRANDES WILHELM · HAMPRECHT RAINER
26 granted patents·144 citations·filing 1975–2007
96Inventor score
Top patents by PatentIndex Score
26 records- 0183US4524124AColor photographic recording material containing a thiazole azo dye releaser for cyan dyesAGFA GEVAERT AG·Filed 1984·Granted Jun 18, 1985·15 cites·2 claims
- 0277US4183949APesticidally active 1-arylamino-2,4-dinitronaphthalenesBAYER AG·Filed 1978·Granted Jan 15, 1980·7 cites·10 claims
- 0375US5808015APyridone-methide azo dyestuffs with improved dyeing and printing properties for hydrophobic synethic fiber materialsBAYER AG·Filed 1996·Granted Sep 15, 1998·17 cites·13 claims
- 0474US4045430AConversion of o-halogenoazo compound to o-cyanoazo compound by reaction with a zinc cyanideBAYER AG·Filed 1975·Granted Aug 30, 1977·8 cites·9 claims
- 0570US7682408B2Disperse azo dyestuffsDYSTAR TEXTILFARBEN GMBH & CO·Filed 2007·Granted Mar 23, 2010·2 cites·12 claims
- 0670US6191265B1Thermomigrationfast azo dyesDYSTAR TEXTILFARBEN GMBH & CO·Filed 1999·Granted Feb 20, 2001·11 cites·14 claims
- 0766US6627742B1Hydroxypyridonemethide azo dyesDYSTAR TEXTILFARBEN GMBH & CO·Filed 2001·Granted Sep 30, 2003·5 cites·19 claims
- 0866US5194598AAzo dyestuffs in which the coupling component contains an N,N-bis(alkoxy carbonylalkyl) substituentBAYER AG·Filed 1991·Granted Mar 16, 1993·8 cites·2 claims
- 0965US4888432AProcess for preparing 2-amino-thiophenes and azo dyestuffs prepared therefromBAYER AG·Filed 1987·Granted Dec 19, 1989·7 cites·8 claims
- 1064US4582898AAzo dyestuffs from cyano-amino-benzisothiazolesBAYER AG·Filed 1984·Granted Apr 15, 1986·6 cites·5 claims
- 1163US6706761B1Dyed compositions containing insecticidesJOHNSON & SON INC S C·Filed 2000·Granted Mar 16, 2004·4 cites·10 claims
- 1258US4479899ARed dyeing 2,6-dicyano-2'-sulfonamido-4'-amino-azo-benzenesBAYER AG·Filed 1983·Granted Oct 30, 1984·13 cites·2 claims
- 1358US4348319AProcess for the preparation of cyano-azo dyestuffsBAYER AG·Filed 1981·Granted Sep 7, 1982·5 cites·11 claims
- 1458US4259237AAzo dyestuffs containing phenolic coupling groupBAYER AG·Filed 1978·Granted Mar 31, 1981·4 cites·8 claims
- 1555US4808723AProcess for the preparation of benzothiazolesBAYER AG·Filed 1984·Granted Feb 28, 1989·3 cites·4 claims
- 1653US5644039AMixtures of blue disperse azo dyestuffsBAYER AG·Filed 1995·Granted Jul 1, 1997·5 cites·10 claims
- 1749US5955615APyridone-methide azo dyestuffsBAYER AG·Filed 1998·Granted Sep 21, 1999·3 cites·9 claims
- 1849US4279813AAqueous process for the preparation of aromatic phosphorus compoundsBAYER AG·Filed 1979·Granted Jul 21, 1981·2 cites·11 claims
- 1947US4269770AProcess for the preparation of cyanoazo dyestuffsBAYER AG·Filed 1979·Granted May 26, 1981·2 cites·8 claims
- 2044US4776886AHalftone gravure printing inks containing an azo dyestuffBAYER AG·Filed 1986·Granted Oct 11, 1988·3 cites·6 claims
- 2142US4452609ADyeing red with 2,6-dicyano-2'-sulfonamido-4'-amino-azo-benzenesBAYER AG·Filed 1982·Granted Jun 5, 1984·6 cites·5 claims
- 2238US5028701AMonazo compounds containing a 1-phenyl-2-pyrazoline coupling componentBAYER AG·Filed 1989·Granted Jul 2, 1991·1 cites·6 claims
- 2337US4293566APesticidally active 1-arylamino-2,4-dinitronaphthalenesBAYER AG·Filed 1979·Granted Oct 6, 1981·0 cites·25 claims
- 2436US5750761ACyanation of double bond systemsBAYER AG·Filed 1996·Granted May 12, 1998·3 cites·15 claims
- 2532US4988752AColored thermoplastic resin compositionBAYER AG·Filed 1989·Granted Jan 29, 1991·2 cites·8 claims
- 2631US4424156AHalo-substituted amino-and substituted-sulphonamido-containing azo dyestuffsBAYER AG·Filed 1980·Granted Jan 3, 1984·2 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →