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having at least one of the sulfo groups bound to a carbon atom of a six-membered aromatic ring being part of a condensed ring system

having at least one of the sulfo groups bound to a carbon atom of a six-membered aromatic ring being part of a condensed ring system · Cooperative Patent Classification (CPC)

Chemical and metallurgical processes, compounds, and materials.

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeC07C309/50
Official titlehaving at least one of the sulfo groups bound to a carbon atom of a six-membered aromatic ring being part of a condensed ring system
Display labelhaving at least one of the sulfo groups bound to a carbon atom of a six-membered aromatic ring being part of a condensed ring system
Total patents18

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
20152
20182
20191
20201
20213
20224
20231
20242
20252

Representative patents

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