Inventor · disambiguated record
Roland Entschel
Also filed as: ENTSCHEL ROLAND
7 granted patents·93 citations·filing 1972–1975
86Inventor score
Top patents by PatentIndex Score
7 records- 0189US4140684AAzo dyes having a 6-hydroxy-pyridone-2 coupling component radical having a substituent in the 1-positionFIDELITY UNION TRUST COMPANY E·Filed 1975·Granted Feb 20, 1979·31 cites·16 claims
- 0284US4083842ADiazo compounds containing two optionally substituted-5-arylazo-6-hydroxypyridone-2 radicals linked through their nitrogen atomsSANDOZ LTD·Filed 1972·Granted Apr 11, 1978·15 cites·11 claims
- 0377US4225490AHeterocyclyl-azo-phenyl dyes having a cationic group linked through a branched alkylene chain to the nitrogen atom of the coupling component radicalSANDOZ LTD·Filed 1975·Granted Sep 30, 1980·9 cites·5 claims
- 0476US4213898ACationic 5-arylazo-6-hydroxypyridone-2 dyesSANDOZ AG·Filed 1973·Granted Jul 22, 1980·12 cites·27 claims
- 0574US3998803A5-arylazo-6-hydroxy-pyridone-2 dyes containing an amino or substituted amino groupFIDELITY UNION TRUST COMPANY E·Filed 1974·Granted Dec 21, 1976·11 cites·18 claims
- 0674US3956271AProcess for the production of concentrated solutions of cationic azo dyesSANDOZ LTD·Filed 1974·Granted May 11, 1976·11 cites·25 claims
- 0757US4032532A1-aminoalkylene-3-cyano-4-methyl-6-hydroxy-1,2-dihydropyrid-2-onesSANDOZ LTD·Filed 1973·Granted Jun 28, 1977·4 cites·26 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →