Inventor · disambiguated record
Ichiro Ichikawa
Also filed as: ICHIKAWA ICHIRO · NARISAWA SHIZUO
6 granted patents·285 citations·filing 1976–1986
86Inventor score
Files withSUMITOMO CHEMICAL CO6
Top patents by PatentIndex Score
6 records- 0194US4673554AMethod of purifying tantalumSUMITOMO CHEMICAL CO·Filed 1985·Granted Jun 16, 1987·62 cites·11 claims
- 0294US4122134AMethod for producing transparent block copolymer resinSUMITOMO CHEMICAL CO·Filed 1977·Granted Oct 24, 1978·90 cites·31 claims
- 0394US4089913AProcess for producing transparent block copolymer resinSUMITOMO CHEMICAL CO·Filed 1976·Granted May 16, 1978·95 cites·27 claims
- 0476US4054616AProcess for producing transparent block copolymer resinsSUMITOMO CHEMICAL CO·Filed 1976·Granted Oct 18, 1977·21 cites·25 claims
- 0554US4220738AProcess for producing block copolymer from conjugated diene and vinyl aromaticSUMITOMO CHEMICAL CO·Filed 1978·Granted Sep 2, 1980·8 cites·21 claims
- 0649US4741989APositive photoresist aqueous developer solution containing quaternary ammonium hydroxide with aliphatic ketone or cyclic ether alone or with amine as development modifierSUMITOMO CHEMICAL CO·Filed 1986·Granted May 3, 1988·9 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →