containing nitrogen in a heterocyclic ring

containing nitrogen in a heterocyclic ring · 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 codeC08K5/5477
Official title{containing nitrogen in a heterocyclic ring}
Display labelcontaining nitrogen in a heterocyclic ring
Total patents203

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
201510
201614
201723
201824
201925
202028
202125
202213
202311
202410
202514
20266

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 C08K5/5477?
CPC C08K5/5477 is the Cooperative Patent Classification code for “containing nitrogen in a heterocyclic ring.”
How many patents are filed under CPC C08K5/5477 (containing nitrogen in a heterocyclic ring)?
Our database includes 203 publications tagged with this CPC code.
Is patent activity under CPC C08K5/5477 growing?
Publication counts under this code: 10 in 2024 vs 14 in 2025 (latest complete years).