Inventor · disambiguated record
Visvanathan Ramanathan
Also filed as: RAMANATHAN VISVANATHAN
25 granted patents·297 citations·filing 1973–1991
96Inventor score
Top patents by PatentIndex Score
25 records- 0197US4101541A3-Cyano-1,2,4-thiadiazolyl-5-czo dyestuffsCIBA GEIGY CORP·Filed 1976·Granted Jul 18, 1978·35 cites·5 claims
- 0296US4084053APolycyclic compoundsCIBA GEIGY CORP·Filed 1975·Granted Apr 11, 1978·53 cites·16 claims
- 0394US4208324ADisperse diaminopyridine-3-azo dyestuffsCIBA GEIGY CORP·Filed 1978·Granted Jun 17, 1980·26 cites·20 claims
- 0493US4068085A3-Nitro-5-azopyridine dyestuffsCIBA GEIGY CORP·Filed 1975·Granted Jan 10, 1978·36 cites·16 claims
- 0591US3932122AAzo compounds, their manufacture and useCIBA GEIGY AG·Filed 1973·Granted Jan 13, 1976·21 cites·6 claims
- 0688US3954398APolyester fibers dyed with a disazo disperse dyestuffCIBA GEIGY AG·Filed 1973·Granted May 4, 1976·16 cites·4 claims
- 0785US4581445ACationic benzothiazole disazo compoundsCIBA GEIGY CORP·Filed 1983·Granted Apr 8, 1986·16 cites·7 claims
- 0883US4033943AFiber reactive water soluble 2,4,6-triamino, 3-cyano pyridine-(5) azo dyestuffsCIBA GEIGY CORP·Filed 1975·Granted Jul 5, 1977·13 cites·7 claims
- 0976US3966706A2,6-Dihydroxy-3-cyano-4-methylpyridine containing azo dyes which contain a functional amino groupCIBA GEIGY AG·Filed 1973·Granted Jun 29, 1976·9 cites·19 claims
- 1071US4115381AAzo dyestuffs having a carboxyl group and an iminosulfonamido, iminosulfonylalkyl or iminosulfonylaryl group in the coupling componentCIBA GEIGY CORP·Filed 1976·Granted Sep 19, 1978·7 cites·3 claims
- 1170US4083688ADisazo pyrazolyl dyed polyester fibersCIBA GEIGY AG·Filed 1973·Granted Apr 11, 1978·7 cites·5 claims
- 1265US4179435AAzo dyestuffs having a carboxyl group and a substituted sulfonylimino group in the coupling componentCIBA GEIGY CORP·Filed 1978·Granted Dec 18, 1979·6 cites·6 claims
- 1364US4927865AAnthraquinoylcarboxylic acid hydrazides, curable compositions and use thereofCIBA GEIGY CORP·Filed 1989·Granted May 22, 1990·6 cites·9 claims
- 1453US4517358ADisazo bis-benzthiazolyl compoundsCIBA GEIGY CORP·Filed 1982·Granted May 14, 1985·7 cites·8 claims
- 1553US3964862AProcess for dyeing and printing textile materials of synthetic organic fibersCIBA GEIGY AG·Filed 1973·Granted Jun 22, 1976·8 cites·12 claims
- 1652US4924015ASubstituted anthraquinones and use thereof in epoxy resinsCIBA GEIGY CORP·Filed 1988·Granted May 8, 1990·4 cites·8 claims
- 1748US4033716ATransfer printing process for hydrophilic fibrous materialCIBA GEIGY AG·Filed 1974·Granted Jul 5, 1977·5 cites·16 claims
- 1847US4091025AProcess for the manufacture of nitroaminopyridinesCIBA GEIGY AG·Filed 1976·Granted May 23, 1978·2 cites·8 claims
- 1944US4654384ABasic water-soluble bis-(β-azo-α-naphtholamino)-triazine compoundsCIBA GEIGY CORP·Filed 1984·Granted Mar 31, 1987·9 cites·3 claims
- 2041US5196521AAzo dyes prepared using 2-alkylamino-3-cyano-4,6-diaminopyridines as coupling componentsCIBA GEIGY CORP·Filed 1991·Granted Mar 23, 1993·2 cites·5 claims
- 2141US4855084AAnthraquinoylcarboxylic acid hydrazides, curable compositions and use thereofCIBA GEIGY CORP·Filed 1988·Granted Aug 8, 1989·6 cites·6 claims
- 2238US4562247ADisazo compounds containing a 6-acetoacetamide-1-naphthol-3-sulfonic derivative as coupling componentCIBA GEIGY CORP·Filed 1984·Granted Dec 31, 1985·1 cites·6 claims
- 2335US4116965AStyryl dyestuffs containing certain amino, cyanopyridine moietiesCIBA GEIGY CORP·Filed 1976·Granted Sep 26, 1978·1 cites·12 claims
- 2429US3945991AHeterocyclic azo compounds containing a quaternated hydrazide groupCIBA GEIGY AG·Filed 1974·Granted Mar 23, 1976·0 cites·3 claims
- 2520US3971740AMonoazo compoundsCIBA GEIGY AG·Filed 1974·Granted Jul 27, 1976·1 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →