Inventor · disambiguated record
Kazufumi Yokogawa
Also filed as: YOKOGAWA KAZUFUMI
10 granted patents·31 citations·filing 1987–1996
85Inventor score
Technology areasC09B
Files withSUMITOMO CHEMICAL CO10
Top patents by PatentIndex Score
10 records- 0161US4812558ATriazine compound having two vinylsulfone type fiber reactive groupsSUMITOMO CHEMICAL CO·Filed 1987·Granted Mar 14, 1989·7 cites·8 claims
- 0260US4880431AAryl monoazo pyridone yellow compound having two vinylsulfone type fiber reactive groups bonded to a triazine ring for dyeing cellulose or polyamideSUMITOMO CHEMICAL CO·Filed 1987·Granted Nov 14, 1989·6 cites·10 claims
- 0353US5112959APolyazo dye compounds having plural vinylsulfone type fiber reactive groups in one moleculeSUMITOMO CHEMICAL CO·Filed 1990·Granted May 12, 1992·5 cites·17 claims
- 0449US5116956APolyazo dye compounds having vinylsulfone type and pyridinium type fiber reactive groupsSUMITOMO CHEMICAL CO·Filed 1990·Granted May 26, 1992·4 cites·16 claims
- 0545US4904766AMonoazo compound having two vinylsulfone type fiber reactive groups through triazinyl bridging groupSUMITOMO CHEMICAL CO·Filed 1987·Granted Feb 27, 1990·3 cites·12 claims
- 0641US4824942AFiber-reactive monoazo compound and aqueous compositions thereof imparting and colorSUMITOMO CHEMICAL CO·Filed 1988·Granted Apr 25, 1989·2 cites·9 claims
- 0740US4910298AMonoazo compound having triazinyl bridging group and two vinylsulfone type fiber reactive groups imparting yellowish colorSUMITOMO CHEMICAL CO·Filed 1987·Granted Mar 20, 1990·2 cites·10 claims
- 0838US5478936AAsymmetric dioxazine compounds and method for dyeing or printing fiber materials using the sameSUMITOMO CHEMICAL CO·Filed 1994·Granted Dec 26, 1995·2 cites·10 claims
- 0929US6136970AAsymmetric dioxazine compounds and method for dyeing or printing fiber materials using the sameSUMITOMO CHEMICAL CO·Filed 1992·Granted Oct 24, 2000·0 cites·10 claims
- 1028US5760196AMonoazo blue disperse dye compounds and methods for dyeing or printing hydrophobic fiber materials using the sameSUMITOMO CHEMICAL CO·Filed 1996·Granted Jun 2, 1998·0 cites·8 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →