C09B44/00 - CPC Classification Index

ClassID:

102295 ⎘

C09B44/00 - CPC Classification

Classification description:

Azo dyes containing onium groups

Sub-classes:

C09B44/005 » {Special process features in the quaternization reaction} 1
C09B44/02 » containing ammonium groups not directly attached to an azo group 5
C09B44/10 » containing cyclammonium groups attached to an azo group by a carbon atom of the ring system 3

Recent Application in this class:

20110225742

Dark coloured azo dyes

20090118510

Dark coloured azo dyes