PatentsDB

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 codeC07C309/47
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 patents38

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
20151
20164
20174
20183
20191
20204
20211
20221
20231
202412
20256

Representative patents

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

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C07C309/47?
CPC C07C309/47 is the Cooperative Patent Classification code for “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.”
How many patents are filed under CPC C07C309/47 (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)?
Our database includes 38 publications tagged with this CPC code.
Is patent activity under CPC C07C309/47 growing?
Publication counts under this code: 12 in 2024 vs 6 in 2025 (latest complete years).