Inventor
OHYAMA TSUKASA
JP15 patents
⚠️ This page may combine multiple inventors who share the name “OHYAMA TSUKASA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUI TOATSU CHEMICALS
14 patentsUS5358536AOct 25, 1994
Dyestuff for heat-sensitive transfer record and transfer sheet containing same
MITSUI TOATSU CHEMICALS6 citations73
US5387686AFeb 7, 1995
Dye for heat-sensitive transfer record and ink composition for heat-sensitive transfer record
MITSUI TOATSU CHEMICALS5 citations72
US5342974AAug 30, 1994
Halogenated anthraquinone and their use as near infrared rays absorbing optical filters
MITSUI TOATSU CHEMICALS13 citations71
US5567470AOct 22, 1996
Heat-sensitive transfer sheet containing blue dyestuff
MITSUI TOATSU CHEMICALS4 citations62
US5359075AOct 25, 1994
Quinophthalone compound
MITSUI TOATSU CHEMICALS4 citations61
US5300475AApr 5, 1994
Sublimation thermal transfer printing sheet comprising novel magenta dyestuffs
MITSUI TOATSU CHEMICALS6 citations61
US5168093ADec 1, 1992
Sublimation thermaltransfer printing sheet comprising novel magenta dyestuffs
MITSUI TOATSU CHEMICALS4 citations61
US5002925AMar 26, 1991
Isopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylate, cyan composition for sublimation transfer record and cyan composition for color toner containing it
MITSUI TOATSU CHEMICALS2 citations61
US4954410ASep 4, 1990
Color toner composition
MITSUI TOATSU CHEMICALS6 citations61
US5302573AApr 12, 1994
Transfer sheet for sublimation recording
MITSUI TOATSU CHEMICALS3 citations60
US5248784ASep 28, 1993
4-carbonyl-substituted coumarin compound
MITSUI TOATSU CHEMICALS2 citations60
US5296445AMar 22, 1994
Dye for heat-sensitive transfer record, ink composition for heat-sensitive transfer record, and transfer sheet
MITSUI TOATSU CHEMICALS0 citations51
US5183474AFeb 2, 1993
Heat-sensitive sublimation transfer cyan dye and transfer sheet
MITSUI TOATSU CHEMICALS0 citations50
US5182395AJan 26, 1993
Isopropyl 1-amino-4-m-toluidinoanthraquinone-2-carboxylate
MITSUI TOATSU CHEMICALS0 citations50