ClassID:

102142

C09B31/22 - CPC Classification

Classification description:

Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling; Trisazo dyes from a coupling component "D" containing directive hydroxyl and amino groups

Recent Application in this class:
#1
20190382586
2019-12-19

COMPOSITION, DICHROIC SUBSTANCE, LIGHT ABSORPTION ANISOTROPIC FILM, LAMINATE, AND IMAGE DISPLAY DEVICE

#2
20170210902
2017-07-27

Azo compound, dye-based polarizing film containing same, and polarizing plate

#3
20170153361
2017-06-01

Achromatic polarizing plate with high-transmissivity and high-degree of polarization

#4
20110164208
2011-07-07

Azo compound and salts thereof, as well as dye-based polarization films and polarizing plates comprising the same

#5
20110089383
2011-04-21

Azo compound and dye polarizing film containing the same

#6
20100257678
2010-10-14

Azo compound and dye polarizing film containing the same

#7
20100226008
2010-09-09

Azo compound, and dye-containing polarizing film comprising the same

#8
20090275742
2009-11-05

COLORING MATTER FOR ANISOTROPIC COLORING MATTER FILM, COMPOSITION COMPRISING SAID COLORING MATTER, ANISOTROPIC COLORING MATTER FILM, AND POLARIZING ELEMENT

#9
20090267031
2009-10-29

Azo dyes, compositions for anisotropic dye films using them, anisotropic dye films and polarizing elements

#10
20080196180
2008-08-21

6-azo-5,5′-dihydroxy-7,7′-disulfo-2-2′ dinaphthylamine derivatives

#11
20070166483
2007-07-19

Azo compound and polarizing film and polarizing plate each containing the same

#12
20070079740
2007-04-12

Azo compound and salt thereof

#13
20060182902
2006-08-17

Dyes for anisotropic dye films, dye compositions for anisotropic dye films, anisotropic dye films and polarizing elements

#14
20050003109
2005-01-06

Dye type polarizing plate