Inventor · disambiguated record
Hisato Itoh
Also filed as: ITOH HISATO
49 granted patents·530 citations·filing 1987–2000
98Inventor score
Top patents by PatentIndex Score
49 records- 0195US5578419ADyes for color filters, and photosensitive resist resin composition containing the sameMITSUI TOATSU CHEMICALS·Filed 1994·Granted Nov 26, 1996·46 cites·15 claims
- 0292US5024926AAlkylphthalocyanine near-infrared absorbers and recording/display materials using the sameMITSUI TOATSU CHEMICALS·Filed 1990·Granted Jun 18, 1991·39 cites·8 claims
- 0391US4808503AElectrophotographic receptors with charge generating azo-substituted tetraphenyl-thiophene or thiophene 1,1-dioxideMITSUI TOATSU CHEMICALS·Filed 1987·Granted Feb 28, 1989·36 cites·16 claims
- 0489US5446135ASulfonyloxy substituted tris-azoaryl dyes and copper complex salts thereof and polarizing films dyed therewithMITSUI TOATSU CHEMICALS·Filed 1994·Granted Aug 29, 1995·27 cites·17 claims
- 0589US4960538A1,2-naphthalocyanine near-infrared absorbent and recording/display materials using sameMITSUI TOATSU CHEMICALS·Filed 1988·Granted Oct 2, 1990·24 cites·16 claims
- 0687US5380842APhthalocyanine compounds and usage thereofMITSUI TOATSU CHEMICALS·Filed 1992·Granted Jan 10, 1995·28 cites·15 claims
- 0781US5318856AWater-soluble azo dyes and polarizing films using the dyesMITSUI TOATSU CHEMICALS·Filed 1992·Granted Jun 7, 1994·38 cites·7 claims
- 0878US5482804AResin composition for color filterMITSUI TOATSU CHEMICALS·Filed 1993·Granted Jan 9, 1996·14 cites·15 claims
- 0977US5639809AAzo compounds and polarizing films using the compoundsMITSUI TOATSU CHEMICALS·Filed 1995·Granted Jun 17, 1997·15 cites·8 claims
- 1077US5270463AHalogenated alkoxyphthalocyaninesMITSUI TOATSU CHEMICALS·Filed 1991·Granted Dec 14, 1993·14 cites·16 claims
- 1169US5446142APhthalocyanine and naphthalocyanine light-absorbing compound and optical recording medium containing sameMITSUI TOATSU CHEMICALS·Filed 1993·Granted Aug 29, 1995·17 cites·22 claims
- 1269US4970021APhthalocyanine compounds and utility thereofMITSUI TOATSU CHEMICALS·Filed 1988·Granted Nov 13, 1990·9 cites·3 claims
- 1368US5739298AWater-soluble azo compoundsMITSUI TOATSU CHEMICALS·Filed 1996·Granted Apr 14, 1998·25 cites·2 claims
- 1468US5235104AHydrazones and electrophotographic photoreceptors comprising themMITSUI TOATSU CHEMICALS·Filed 1992·Granted Aug 10, 1993·9 cites·10 claims
- 1566US5350843AHalogenated phthalocyanine compound, method for preparing sameMITSUI TOATSU CHEMICALS·Filed 1991·Granted Sep 27, 1994·9 cites·14 claims
- 1664US5132190AHydrozones and electrophotographic photoreceptors comprising themMITSUI TOATSU CHEMICALS·Filed 1990·Granted Jul 21, 1992·8 cites·12 claims
- 1763US5482986ABenzopyran compound and use of the sameMITSUI TOATSU CHEMICALS·Filed 1994·Granted Jan 9, 1996·7 cites·8 claims
- 1861US5789137ADyes for color filters and photosensitive resist resin composition containing the sameMITSUI CHEMICALS INC·Filed 1996·Granted Aug 4, 1998·5 cites·7 claims
- 1961US5280114AHalogenation of alkoxyphthalocyanineMITSUI TOATSU CHEMICALS·Filed 1991·Granted Jan 18, 1994·11 cites·12 claims
- 2059US5751483AColor filter having polarizabilityMITSUI TOATSU CHEMICALS·Filed 1995·Granted May 12, 1998·26 cites·6 claims
- 2159US5695911AOptical recording mediumMITSUI TOATSU CHEMICALS·Filed 1995·Granted Dec 9, 1997·7 cites·1 claims
- 2259US5582774AAlkylphthalocyanine near-infrared absorbers and recording/display materials using the sameMITSUI TOATSU CHEMICALS·Filed 1991·Granted Dec 10, 1996·5 cites·4 claims
- 2358US5548073AWater-soluble azo compoundsMITSUI TOATSU CHEMICALS·Filed 1995·Granted Aug 20, 1996·5 cites·3 claims
- 2458US5449587ACompact disk-write once type optical recording mediaMITSUI TOATSU CHEMICALS·Filed 1994·Granted Sep 12, 1995·7 cites·2 claims
- 2557US5750229APhthalocyanine compound and optical recording medium containing itMITSUI TOATSU CHEMICALS·Filed 1997·Granted May 12, 1998·5 cites·7 claims
- 2656US5646273APhthalocyanine compound and optical recording medium containing itMITSUI TOATSU CHEMICALS·Filed 1995·Granted Jul 8, 1997·5 cites·16 claims
- 2755US6242651B1Process for the preparation of N,N′-dialkylalkanediaminesMITSUI CHEMICALS INC·Filed 2000·Granted Jun 5, 2001·2 cites·22 claims
- 2855US5334714AMethod for preparing alkoxyphthalocyanineMITSUI TOATSU CHEMICALS·Filed 1993·Granted Aug 2, 1994·4 cites·9 claims
- 2953US6051360ADyestuffs and resin compositionsMITSUI CHEMICALS INC·Filed 1997·Granted Apr 18, 2000·4 cites·14 claims
- 3053US5409634ANear infrared absorbers and display/recording materials using the sameMITSUI TOATSU CHEMICALS·Filed 1991·Granted Apr 25, 1995·7 cites·15 claims
- 3150US5618868APolarizing film of a hydrophilic polymer film containing a novel azo compoundMITSUI TOATSU CHEMICALS·Filed 1994·Granted Apr 8, 1997·3 cites·6 claims
- 3250US5446141AAlkylphthalocyanine near-infrared absorbers and recording/display materials using the sameMITSUI TOATSU CHEMICALS·Filed 1992·Granted Aug 29, 1995·9 cites·6 claims
- 3348US5358833AAmorphous phthalocyanine compound or mixture of amorphous phthalocyanine compounds, and method for preparing sameMITSUI TOATSU CHEMICALS·Filed 1992·Granted Oct 25, 1994·11 cites·22 claims
- 3447US5220010AMethod for preparation alkoxyphthalocyanineMITSUI TOATSU CHEMICALS·Filed 1991·Granted Jun 15, 1993·3 cites·6 claims
- 3546US6203725B1Luminescent compound for controlling traveling and method for controlling traveling using the sameMITSUI CHEMICALS INC·Filed 1997·Granted Mar 20, 2001·11 cites·12 claims
- 3646US5698682AAzo compounds and polarizing films using the compoundsMITSUI TOATSU CHEMICALS·Filed 1997·Granted Dec 16, 1997·3 cites·4 claims
- 3745US5252769AAnthraquinonic colorant and polarizing film containing the colorantMITSUI TOATSU CHEMICALS·Filed 1992·Granted Oct 12, 1993·2 cites·2 claims
- 3843US4963449AP-amino substituted tetraphenylthiophenes and electrophotographic photoreceptors containing themMITSUI TOATSU CHEMICALS·Filed 1988·Granted Oct 16, 1990·4 cites·13 claims
- 3941US5948597ADyes for color filters and photosensitive resist resin composition containing the sameMITSUI CHEMICALS INC·Filed 1998·Granted Sep 7, 1999·6 cites·8 claims
- 4041US5423100AWater-soluble azo compounds and polarizing films using the compoundsMITSUI TOATSU CHEMICALS·Filed 1993·Granted Jun 13, 1995·7 cites·6 claims
- 4141US5023343AP-amino substituted tetraphenylthiophenes and electrophotographic photoreceptors containing themMITSUI TOATSU CHEMICALS·Filed 1990·Granted Jun 11, 1991·1 cites·7 claims
- 4240US6306550B1Color filtersMITSUI CHEMICALS INC·Filed 1999·Granted Oct 23, 2001·4 cites·7 claims
- 4337US5773172AColor filter having novel dyestuffMITSUI TOATSU CHEMICALS·Filed 1996·Granted Jun 30, 1998·1 cites·2 claims
- 4434US5382465AAnthraquinonic colorant and polarizing film containing the colorantMITSUI TOATSU CHEMICALS·Filed 1993·Granted Jan 17, 1995·3 cites·2 claims
- 4533US5952477AAzo compound and polarizing filmMITSUI CHEMICALS INC·Filed 1997·Granted Sep 14, 1999·3 cites·9 claims
- 4633US5750599AQuinophthalone compounds and polarizing films using sameMITSUI TOATSU CHEMICALS·Filed 1997·Granted May 12, 1998·0 cites·4 claims
- 4732US4808507AElectrophotographic photoreceptor 2-Phenyl-benzooxazole bisazo basedMITSUI TOATSU CHEMICALS·Filed 1987·Granted Feb 28, 1989·0 cites·9 claims
- 4830US5659039AQuinophthalone compoundsMITSUI TOATSU CHEMICALS·Filed 1995·Granted Aug 19, 1997·1 cites·4 claims
- 4930US5387678AHalogenation process of phthalocyanine and halogenated alkoxyphthalocyanineMITSUI TOATSU CHEMICALS·Filed 1993·Granted Feb 7, 1995·0 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →