Inventor
TSUNEMITSU KATSUHIKO
JP12 patents
Patents
12 patentsUS4814320AMar 21, 1989
Heat-sensitive recording material
YAMADA CHEM CO7 citations72
US4598150AJul 1, 1986
Chromogenic 1-(3-methoxy-4-alkoxyphenyl)-2-(2'-quinolyl)ethylene compounds
YAMADA CHEM CO9 citations72
US4444591AApr 24, 1984
Chromogenic compounds and the use thereof as color former in copying or recording materials
YAMADA CHEM CO12 citations71
US4835291AMay 30, 1989
Divinyl compounds and chromogenic recording-material prepared by using thereof
YAMADA CHEM CO3 citations59
US4747875AMay 31, 1988
Chromogenic azaphthalide compound and a colour-forming recording composition containing the same
YAMADA CHEM CO2 citations59
US4564679AJan 14, 1986
Chromogenic compounds
YAMADA CHEM CO3 citations59
US4820841AApr 11, 1989
Chromogenic quinoline compounds
YAMADA CHEM CO2 citations53
US4845245AJul 4, 1989
Process for producing 3,3-bis-(4-dimethylaminophenyl)-6-dimethylaminophthalide
YAMADA CHEM CO0 citations49
US5179066AJan 12, 1993
Thermosensitive recording material
YAMADA CHEM CO0 citations48
US4808567AFeb 28, 1989
Divinyl compounds and chromogenic recording-material prepared by using thereof
YAMADA CHEM CO1 citations48
US5286702AFeb 15, 1994
Phthalide compound and recording material using the compound
YAMADA CHEM CO0 citations44
US4892973AJan 9, 1990
Process for producing 1,1-diphenylalkenes
YAMADA CHEM CO0 citations34