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Stilbene-azo dyes {(disazo dyes from diaminostilbene, C09B35/215)}

Stilbene-azo dyes {(disazo dyes from diaminostilbene, C09B35/215)} · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

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CPC classification statistics
Metric	Value
CPC code	C09B56/04
Official title	Stilbene-azo dyes {(disazo dyes from diaminostilbene, C09B35/215)}
Display label	Stilbene-azo dyes {(disazo dyes from diaminostilbene, C09B35/215)}
Total patents	7

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is declining.

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.