Inventor · disambiguated record
Toshio Nakamatsu
Also filed as: NAKAMATSU TOSHIO
15 granted patents·130 citations·filing 1981–2002
92Inventor score
Top patents by PatentIndex Score
15 records- 0189US5367075AAnthrapyridone compounds, their production process and their useSUMITOMO CHEMICAL CO·Filed 1993·Granted Nov 22, 1994·31 cites·4 claims
- 0288US4902798AAnthrapyridone compoundsSUMITOMO CHEMICAL CO·Filed 1987·Granted Feb 20, 1990·35 cites·4 claims
- 0378US4667022AReactive dye having both monochlorotriozinyl and vinylsulfone type reactive groupsSUMITOMO CHEMICAL CO·Filed 1981·Granted May 19, 1987·11 cites·4 claims
- 0474US6861549B2Production method of 4′-bromomethyl-2-cyanobiphenylSUMITOMO CHEMICAL CO·Filed 2002·Granted Mar 1, 2005·6 cites·6 claims
- 0571US4711641AReactive dye composition: mixture of reactive copper phthalocyanine dyes: dichloro-triazinyl dye and vinyl sulphonyl type dyeSUMITOMO CHEMICAL CO·Filed 1986·Granted Dec 8, 1987·10 cites·9 claims
- 0663US4396549ACopper phthalocyanine blue reactive dyeSUMITOMO CHEMICAL CO·Filed 1981·Granted Aug 2, 1983·6 cites·4 claims
- 0761US4626257AMethod for dyeing polyester fiber materials: disperse dye combinations with compensated color fadingSUMITOMO CHEMICAL CO·Filed 1985·Granted Dec 2, 1986·12 cites·6 claims
- 0850US5304677AMethod for producing 2,6-dihydroxybenzoic acidSUMITOMO CHEMICAL CO·Filed 1993·Granted Apr 19, 1994·4 cites·7 claims
- 0947US5276198AProcess for producing 2-methyl-1,3-cyclohexanedione and 2-methylresorcinolSUMITOMO CHEMICAL CO·Filed 1992·Granted Jan 4, 1994·3 cites·15 claims
- 1046US5599971AMethod for producing 1,4-dihydroxy-2-naphthoic acidSUMITOMO CHEMICAL CO·Filed 1995·Granted Feb 4, 1997·3 cites·9 claims
- 1140US6187921B12-amino-6-chloropurine and method for preparing the sameSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Feb 13, 2001·1 cites·2 claims
- 1240US4690686ALight-fast yellow disperse dye composition for polyesterSUMITOMO CHEMICAL CO·Filed 1986·Granted Sep 1, 1987·2 cites·5 claims
- 1333US5789590ADouble cone-like crystal form of 2-amino-6-chloropurine and preparationSUMIKA FINE CHEMICALS CO LTD·Filed 1996·Granted Aug 4, 1998·0 cites·3 claims
- 1432US5183892AAnthrapyridone compoundsSUMITOMO CHEMICAL CO·Filed 1990·Granted Feb 2, 1993·3 cites·11 claims
- 1532US5136045APyrazole containing methine compoundsSUMITOMO CHEMICAL CO·Filed 1990·Granted Aug 4, 1992·3 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →