Inventor
SHIOJIMA ISAO
JP5 patents
Patents
5 patentsUS4847385AJul 11, 1989
Cyanine dyes
RICOH KK26 citations89
US5084593AJan 28, 1992
Leuco dyes and recording material employing the same
RICOH KK12 citations72
US5057154AOct 15, 1991
Leuco dyes and recording material employing the same
RICOH KK10 citations72
US5008238AApr 16, 1991
Leuco dyes and recording material employing the same
RICOH KK11 citations72
US4939117AJul 3, 1990
Leuco dyes and recording material employing the same
RICOH KK4 citations61