Inventor
SAKAMOTO SADAYUKI
JP5 patents
Patents
5 patentsUS4721377AJan 26, 1988
Highly-refractive plastic lens
TORAY INDUSTRIES132 citations96
US4812032AMar 14, 1989
Highly-refractive plastic lens
TORAY INDUSTRIES108 citations95
US4487904ADec 11, 1984
Urethanized acrylic resin material for plastic lens and lens composed thereof
TORAY INDUSTRIES128 citations94
US4410597AOct 18, 1983
Polyurethane resins and polyurethane resin coating compositions
TORAY INDUSTRIES57 citations94
US4247675AJan 27, 1981
Polyurethane resins and polyurethane resin coating compositions
TORAY INDUSTRIES9 citations72