• All sections
• C - Chemistrymetallurgy
• C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
• C09B 43/22 - Preparation of azo dyes from other azo compounds by acylation of hydroxy groups with monocarboxylic acids, carbamic acid esters or halides, monoisocyanates or haloformic acid esters having the carboxyl group directly attached to an aromatic carbocyclic ring

Patent holdings for IPC class C09B 43/22

Total number of patents in this class: 0

10-year publication summary

Principal owners for this class