with oxygen atoms in position 4

with oxygen atoms in position 4 · 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 codeC07D215/56
Official titlewith oxygen atoms in position 4
Display labelwith oxygen atoms in position 4
Total patents217

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
201538
201626
201725
201818
201921
202019
202124
202217
202310
202410
20257
20262

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 C07D215/56?
CPC C07D215/56 is the Cooperative Patent Classification code for “with oxygen atoms in position 4.”
How many patents are filed under CPC C07D215/56 (with oxygen atoms in position 4)?
Our database includes 217 publications tagged with this CPC code.
Is patent activity under CPC C07D215/56 growing?
Publication counts under this code: 10 in 2024 vs 7 in 2025 (latest complete years).