Six-membered rings

Six-membered 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 codeC07F9/6533
Official titleSix-membered rings
Display labelSix-membered rings
Total patents82

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
201616
201712
20186
201910
20209
20217
20226
20237
20242
20255

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 C07F9/6533?
CPC C07F9/6533 is the Cooperative Patent Classification code for “Six-membered rings.”
How many patents are filed under CPC C07F9/6533 (Six-membered rings)?
Our database includes 82 publications tagged with this CPC code.
Is patent activity under CPC C07F9/6533 growing?
Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).