containing more than four rings

containing more than four 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 codeC07C2603/90
Official titlecontaining more than four rings
Display labelcontaining more than four rings
Total patents106

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
201515
20169
20178
20186
201914
20208
20216
202211
202310
202413
20255
20261

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 C07C2603/90?
CPC C07C2603/90 is the Cooperative Patent Classification code for “containing more than four rings.”
How many patents are filed under CPC C07C2603/90 (containing more than four rings)?
Our database includes 106 publications tagged with this CPC code.
Is patent activity under CPC C07C2603/90 growing?
Publication counts under this code: 13 in 2024 vs 5 in 2025 (latest complete years).