Inventor
OKUDA YASUJI
JP8 patents
Patents
8 patentsUS5510397AApr 23, 1996
Aqueous pigment ink composition for writing utensils
SAKURA COLOR PROD CORP19 citations92
US5762694AJun 9, 1998
Ink composition for marking pen
SAKURA COLOR PROD CORP22 citations90
US5106881AApr 21, 1992
Water base pigment ink compositions for use in marking pens
SAKURA COLOR PROD CORP26 citations90
US4942185AJul 17, 1990
Water base pigment ink compositions for use in marking pens
SAKURA COLOR PROD CORP24 citations90
US3945837AMar 23, 1976
Ink composition
SAKURA COLOR PROD CORP45 citations88
US5009536AApr 23, 1991
Water base pigment ink compositions for use in marking pens
SAKURA COLOR PROD CORP21 citations80
US4829108AMay 9, 1989
Solid coating compositions
SAKURA COLOR PROD CORP23 citations78
US5716217AFeb 10, 1998
Water base ink compositions for neon boards
SAKURA COLOR PROD CORP15 citations71