the six-membered aromatic ring being part of a condensed ring system formed by at least three rings

the six-membered aromatic ring being part of a condensed ring system formed by at least three rings · 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 codeC07C211/31
Official titlethe six-membered aromatic ring being part of a condensed ring system formed by at least three rings
Display labelthe six-membered aromatic ring being part of a condensed ring system formed by at least three rings
Total patents26

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20157
20165
20175
20183
20202
20212
20242

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 C07C211/31?
CPC C07C211/31 is the Cooperative Patent Classification code for “the six-membered aromatic ring being part of a condensed ring system formed by at least three rings.”
How many patents are filed under CPC C07C211/31 (the six-membered aromatic ring being part of a condensed ring system formed by at least three rings)?
Our database includes 26 publications tagged with this CPC code.
Is patent activity under CPC C07C211/31 growing?
Publication counts under this code: 2 in 2021 vs 2 in 2024 (latest complete years).