Inventor
TAKUMA KEISUKE
JP49 patents
⚠️ This page may combine multiple inventors who share the name “TAKUMA KEISUKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MITSUI TOATSU CHEMICALS
26 patentsUS5705101AJan 6, 1998
Near infrared absorber, preparation process therefor and use thereof
MITSUI TOATSU CHEMICALS45 citations92
US5677398AOct 14, 1997
Epoxy acrylate resins and their uses
MITSUI TOATSU CHEMICALS41 citations92
US5639809AJun 17, 1997
Azo compounds and polarizing films using the compounds
MITSUI TOATSU CHEMICALS15 citations73
US5358536AOct 25, 1994
Dyestuff for heat-sensitive transfer record and transfer sheet containing same
MITSUI TOATSU CHEMICALS6 citations73
US5658707AAug 19, 1997
Optical recording media
MITSUI TOATSU CHEMICALS10 citations72
US5387686AFeb 7, 1995
Dye for heat-sensitive transfer record and ink composition for heat-sensitive transfer record
MITSUI TOATSU CHEMICALS5 citations72
US4734218AMar 29, 1988
Dichroic azo dyestuffs and liquid crystal composition containing said dyestuffs
MITSUI TOATSU CHEMICALS8 citations72
US5342974AAug 30, 1994
Halogenated anthraquinone and their use as near infrared rays absorbing optical filters
MITSUI TOATSU CHEMICALS13 citations71
US5158703AOct 27, 1992
Resin composition for ultraviolet luminescent screen
MITSUI TOATSU CHEMICALS14 citations71
US5182409AJan 26, 1993
Preparation process of bis(1,2-diaryl-1,2-ethyolenedithiolato)nickel-based complex
MITSUI TOATSU CHEMICALS7 citations68
US5693396ADec 2, 1997
Phthalocyanine compounds and optical recording media comprising them
MITSUI TOATSU CHEMICALS4 citations63
US5672462ASep 30, 1997
Optical recording medium
MITSUI TOATSU CHEMICALS6 citations63
US5698682ADec 16, 1997
Azo compounds and polarizing films using the compounds
MITSUI TOATSU CHEMICALS3 citations62
US5567470AOct 22, 1996
Heat-sensitive transfer sheet containing blue dyestuff
MITSUI TOATSU CHEMICALS4 citations62
US5630849AMay 20, 1997
Dyeing method
MITSUI TOATSU CHEMICALS5 citations61
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
US4883611ANov 28, 1989
Dichroic coloring agents for liquid crystal displays
MITSUI TOATSU CHEMICALS2 citations54
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
MITSUI CHEMICALS INC
20 patentsUS5804102ASep 8, 1998
Plasma display filter
MITSUI CHEMICALS INC99 citations96
US6080833AJun 27, 2000
Low-birefringent organic optical component and a spirobiindan polymer
MITSUI CHEMICALS INC51 citations92
US5948593ASep 7, 1999
Optical recording medium
MITSUI CHEMICALS INC36 citations92
US6458908B1Oct 1, 2002
Sulfur-containing unsaturated carboxylate compound and its cured products
MITSUI CHEMICALS INC33 citations91
US5788914AAug 4, 1998
Near infrared ray absorbing compound having high durability and its use
MITSUI CHEMICALS INC27 citations90
US5953857ASep 21, 1999
Method for controlling plant growth
MITSUI CHEMICALS INC27 citations89
US6320020B1Nov 20, 2001
Sulfur-containing (thio)ether (co)polymer and a use thereof
MITSUI CHEMICALS INC17 citations84
US6297332B1Oct 2, 2001
Epoxy-resin composition and use thereof
MITSUI CHEMICALS INC9 citations74
US6130346AOct 10, 2000
Process for preparing an organic compound from an oxirane-containing compound in the presence of a tris(triaminophosphoranylideneamino)phosphine oxide
MITSUI CHEMICALS INC11 citations73
US6028161AFeb 22, 2000
Polycarbonate copolymer and applications thereof
MITSUI CHEMICALS INC9 citations73
US5990261ANov 23, 1999
Organic optical component
MITSUI CHEMICALS INC6 citations73
US5916488AJun 29, 1999
Polyimide resin compositions for optical filters
MITSUI CHEMICALS INC5 citations73
US5868968AFeb 9, 1999
Polyimide resin compositions for optical filters
MITSUI CHEMICALS INC5 citations73
US6162520ADec 19, 2000
Optical recording medium and dipyrromethene metal chelate compound for use therein
MITSUI CHEMICALS INC6 citations72
US5945503AAug 31, 1999
Polymaleimide resin composition and laminate plate for semiconductor substrate using it
MITSUI CHEMICALS INC7 citations70
US6570025B1May 27, 2003
Sulfur compound and use thereof
MITSUI CHEMICALS INC4 citations62
US6060606AMay 9, 2000
Dipyrromethene metal chelate compounds
MITSUI CHEMICALS INC4 citations62
US6482916B1Nov 19, 2002
Dyed molded article
MITSUI CHEMICALS INC4 citations60
US6310147B1Oct 30, 2001
Epoxy-resin composition and use thereof
MITSUI CHEMICALS INC3 citations60
US6355327B1Mar 12, 2002
Optical recording medium and dipyrromethene metal chelate compound for use therein
MITSUI CHEMICALS INC0 citations51