Inventor
ICHIKAWA ICHIRO
6 patents
Patents
6 patentsUS4673554AJun 16, 1987
Method of purifying tantalum
SUMITOMO CHEMICAL CO62 citations95
US4122134AOct 24, 1978
Method for producing transparent block copolymer resin
SUMITOMO CHEMICAL CO90 citations94
US4089913AMay 16, 1978
Process for producing transparent block copolymer resin
SUMITOMO CHEMICAL CO95 citations94
US4054616AOct 18, 1977
Process for producing transparent block copolymer resins
SUMITOMO CHEMICAL CO21 citations80
US4741989AMay 3, 1988
Positive photoresist aqueous developer solution containing quaternary ammonium hydroxide with aliphatic ketone or cyclic ether alone or with amine as development modifier
SUMITOMO CHEMICAL CO9 citations73
US4220738ASep 2, 1980
Process for producing block copolymer from conjugated diene and vinyl aromatic
SUMITOMO CHEMICAL CO8 citations72