C09B5/20 - CPC Classification Index

ClassID:

101893 ⎘

C09B5/20 - CPC Classification

Classification description:

Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic ring being only condensed in peri position Flavanthrones

Sub-classes:

C09B5/22 » Preparation from starting materials already containing the flavanthrone nucleus 0

Recent Application in this class:

20080319089

2008-12-25

Method of colouring carrier materials

20070051275

2007-03-08

Method of colouring carrier materials