Inventor · disambiguated record
John F. Stephen
Also filed as: STEPHEN JOHN F
52 granted patents·575 citations·filing 1972–1999
98Inventor score
Top patents by PatentIndex Score
52 records- 0197US3941746AContaining hindered phenolic norbornane-2,3-dicarboximides stabilized compositionsCIBA GEIGY CORP·Filed 1975·Granted Mar 2, 1976·55 cites·4 claims
- 0294US4104043AEsters of 3-hydroxyindone compounds as herbicides and miticidesUNION CARBIDE CORP·Filed 1972·Granted Aug 1, 1978·32 cites·34 claims
- 0394US4091006AEsters of 3-hydroxyindone compoundsUNION CARBIDE CORP·Filed 1975·Granted May 23, 1978·31 cites·46 claims
- 0493US4077941AMetal salts of N,N-disubstituted β-alanines and stabilized compositionsCIBA GEIGY CORP·Filed 1976·Granted Mar 7, 1978·42 cites·19 claims
- 0592US4473696ASynthesis of 2-substituted-5-methyl-pyridinesICI AMERICA INC·Filed 1982·Granted Sep 25, 1984·25 cites·3 claims
- 0691US5053516ASynthesis of 2-substituted-5-methylpyridines from methylcyclobutanecarbonitrile, valeronitrile and pentenonitrile intermediatesICI AMERICA INC·Filed 1990·Granted Oct 1, 1991·43 cites·5 claims
- 0789US4435586AEtherification process for hexitols and anhydrohexitolsKRUSE WALTER M·Filed 1982·Granted Mar 6, 1984·24 cites·9 claims
- 0889US4093586APyrrolidine dicarboxylic acids and esters and stabilized compositionsCIBA GEIGY CORP·Filed 1976·Granted Jun 6, 1978·31 cites·31 claims
- 0984US4645839ASulphur dehydrogenation process to yield 5-methyl-2-pyridoneICI AMERICA INC·Filed 1985·Granted Feb 24, 1987·19 cites·10 claims
- 1083US6344505B1Mono- and bis-benzotriazolyldihydroxybiaryl UV absorbersCYTEC IND INC·Filed 1999·Granted Feb 5, 2002·42 cites·39 claims
- 1183US4000113AAcylated derivatives of 2,6-dihydroxy-9-azabicyclo[3.3.1]nonane and stabilized compositionsCIBA GEIGY CORP·Filed 1975·Granted Dec 28, 1976·27 cites·12 claims
- 1281US4116930APyromellitic dimiides of 3,5-dialkyl-4-hydroxyphenylsubstituted aminesCIBA GEIGY CORP·Filed 1976·Granted Sep 26, 1978·10 cites·9 claims
- 1379US4045404AHindered phenolic norbornane-2,3-dicarboximides and stabilized compositionsCIBA GEIGY CORP·Filed 1975·Granted Aug 30, 1977·9 cites·6 claims
- 1476US3956361AHindered phenolic derivatives of norbornane thioalcoholsCIBA GEIGY CORP·Filed 1974·Granted May 11, 1976·15 cites·11 claims
- 1575US4584380ASynthesis of 2-substituted-5-methyl-pyridines and intermediates thereforICI AMERICA INC·Filed 1984·Granted Apr 22, 1986·11 cites·14 claims
- 1673US4487978AHigh yield process for preparing 4,4'-biphenol and tert-alkylated-alkylbenzenesICI AMERICA INC·Filed 1983·Granted Dec 11, 1984·10 cites·7 claims
- 1772US4482755AHigh yield process for preparing 4,4'-biphenol and para-alkylbenzenesICI AMERICA INC·Filed 1983·Granted Nov 13, 1984·10 cites·11 claims
- 1869US4804699AMonomeric and oligomeric glutarate-based light stabilizers for plasticsICI AMERICA INC·Filed 1987·Granted Feb 14, 1989·18 cites·12 claims
- 1967US4313000AProcess for preparing 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitro-N-alkanesulphonyl benzamides from a toluene derivative and intermediatesICI AMERICA INC·Filed 1981·Granted Jan 26, 1982·6 cites·9 claims
- 2065US4504664A2-PiperidonesICI AMERICA INC·Filed 1983·Granted Mar 12, 1985·5 cites·2 claims
- 2163US4593057AHindered phenolic compounds derived from hexitans and stabilized compositionsICI AMERICA INC·Filed 1985·Granted Jun 3, 1986·6 cites·7 claims
- 2259US4487977AHigh yield process for preparing 3,3',5,5'-tetraalkyl-4,4'-biphenolICI AMERICA INC·Filed 1983·Granted Dec 11, 1984·5 cites·8 claims
- 2358US4925938AN-2,2-dimethyl-2-(2-hydroxy-alkylphenyl) heterocycles and stabilized compositionsICI AMERICA INC·Filed 1988·Granted May 15, 1990·5 cites·7 claims
- 2458US4826983AN-2,2-dimethyl-2-(2-hydroxy-alkylphenyl) heterocycles and stabilized compositionsICI AMERICA INC·Filed 1987·Granted May 2, 1989·5 cites·1 claims
- 2557US4369316A3,1 Benzoxazine 2,4-dioneICI AMERICA INC·Filed 1981·Granted Jan 18, 1983·3 cites·1 claims
- 2655US4783547APolyfluoroaromatic nitrilesICI AMERICA INC·Filed 1986·Granted Nov 8, 1988·4 cites·2 claims
- 2755US4734502AProcess for the preparation of 2,2,6,6-tetramethyl-4-oxopiperidineICI AMERICA INC·Filed 1986·Granted Mar 29, 1988·4 cites·2 claims
- 2854US4883831AMelamine-based light stabilizers for plasticsICI AMERICA INC·Filed 1988·Granted Nov 28, 1989·10 cites·8 claims
- 2954US4883860ATriazine-based light stabilizers for plasticsICI AMERICA INC·Filed 1988·Granted Nov 28, 1989·10 cites·11 claims
- 3053US4687854ABispiperidone precursor of 2-substituted-5-methyl-pyridinesICI AMERICA INC·Filed 1986·Granted Aug 18, 1987·3 cites·1 claims
- 3153US4658031ASynthesis of 2-substituted-5-methyl-pyridines and intermediates thereforICI AMERICA INC·Filed 1985·Granted Apr 14, 1987·3 cites·2 claims
- 3251US4965394ADifunctional polyfluoroaromatic derivatives and a process of preparing the sameICI AMERICA INC·Filed 1989·Granted Oct 23, 1990·3 cites·11 claims
- 3351US4866185ADifunctional polyfluoroaromatic derivatives and a process of preparing the sameICI AMERICA INC·Filed 1988·Granted Sep 12, 1989·3 cites·2 claims
- 3450US4851461ATetraalkyl piperidylated stabilizers for plasticsICI AMERICA INC·Filed 1988·Granted Jul 25, 1989·3 cites·8 claims
- 3549US4801757ANoncrystalline tris(4-hydroxy-2-methyl-5-tert. butylphenyl) butaneICI AMERICA INC·Filed 1987·Granted Jan 31, 1989·3 cites·7 claims
- 3649US4701485AMalonate-based light stabilizers for plasticsICI AMERICA INC·Filed 1986·Granted Oct 20, 1987·3 cites·17 claims
- 3749US4628096APreparation of 2-halo-5-methylpyridines from 4-methyl-4-pentene derivativesICI AMERICA INC·Filed 1984·Granted Dec 9, 1986·2 cites·19 claims
- 3844US4690963ATartrate-based light stabilizers for plasticsICI AMERICA INC·Filed 1986·Granted Sep 1, 1987·2 cites·12 claims
- 3944US4613638AHindered phenolic compounds derived from hexides and stabilized compositionsICI AMERICA INC·Filed 1985·Granted Sep 23, 1986·2 cites·7 claims
- 4043US4889882ATetramethyl piperidyl terminated triazine oligomeric esters and amidesICI AMERICA INC·Filed 1988·Granted Dec 26, 1989·6 cites·17 claims
- 4143US4600740AHindered dydroxybenzyl hexaalkyldiphenyl-methanes and stabilized compositionsICI AMERICA INC·Filed 1985·Granted Jul 15, 1986·2 cites·5 claims
- 4243US4314078AProcess for preparing 5-(2-chloro-4-trifluoromethylphenoxy)-2-nitro-N-alkanesulphonyl benzamides from a benzoic acid derivative and intermediatesICI AMERICA INC·Filed 1981·Granted Feb 2, 1982·2 cites·8 claims
- 4341US4709063APreparation of 2-halo-5-methylpyridines from 4-methyl-4-pentene derivativesICI AMERICA INC·Filed 1986·Granted Nov 24, 1987·1 cites·1 claims
- 4440US4710527AMalonate-based light stabilizers for plasticsICI AMERICA INC·Filed 1986·Granted Dec 1, 1987·4 cites·13 claims
- 4540US4598113AHindered hydroxyphenylalkanoates of ethoxylated bisphenol A and stabilized compositionsICI AMERICA INC·Filed 1985·Granted Jul 1, 1986·5 cites·7 claims
- 4637US4687800ATartrate-based light stabilizers for plasticsICI AMERICA INC·Filed 1986·Granted Aug 18, 1987·1 cites·15 claims
- 4737US4000112AHindered phenol derivatives of 9-thiabicyclononanes and stabilized compositionsCIBA GEIGY CORP·Filed 1975·Granted Dec 28, 1976·3 cites·14 claims
- 4835US4645853AHindered phenolic oxamide compounds and stabilized compositionsICI AMERICA INC·Filed 1985·Granted Feb 24, 1987·3 cites·15 claims
- 4934US4981964AOligomeric polyesters and polyamides containing dipiperidyl triazine groupsICI AMERICA INC·Filed 1988·Granted Jan 1, 1991·2 cites·10 claims
- 5034US4786750APentene derivativesICI AMERICA INC·Filed 1987·Granted Nov 22, 1988·0 cites·1 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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