condensed with carbocyclic rings or carbocyclic ring systems

condensed with carbocyclic rings or carbocyclic ring systems · 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 codeC07F9/65128
Official title{condensed with carbocyclic rings or carbocyclic ring systems}
Display labelcondensed with carbocyclic rings or carbocyclic ring systems
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
20155
20165
20172
20203
20223
20232
20244
20251
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 C07F9/65128?
CPC C07F9/65128 is the Cooperative Patent Classification code for “condensed with carbocyclic rings or carbocyclic ring systems.”
How many patents are filed under CPC C07F9/65128 (condensed with carbocyclic rings or carbocyclic ring systems)?
Our database includes 26 publications tagged with this CPC code.
Is patent activity under CPC C07F9/65128 growing?
Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).