Naphtho [c] pyrroles; Hydrogenated naphtho [c] pyrroles

Naphtho [c] pyrroles; Hydrogenated naphtho [c] pyrroles · 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 codeC07D209/62
Official titleNaphtho [c] pyrroles; Hydrogenated naphtho [c] pyrroles
Display labelNaphtho [c] pyrroles; Hydrogenated naphtho [c] pyrroles
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
20162
20173
20183
20194
20221
20234
20243
20251

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 C07D209/62?
CPC C07D209/62 is the Cooperative Patent Classification code for “Naphtho [c] pyrroles; Hydrogenated naphtho [c] pyrroles.”
How many patents are filed under CPC C07D209/62 (Naphtho [c] pyrroles; Hydrogenated naphtho [c] pyrroles)?
Our database includes 26 publications tagged with this CPC code.
Is patent activity under CPC C07D209/62 growing?
Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).