Radicals substituted by oxygen atoms

Radicals substituted by oxygen atoms · 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 codeC07D333/56
Official titleRadicals substituted by oxygen atoms
Display labelRadicals substituted by oxygen atoms
Total patents127

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
201510
201610
201711
201812
201916
202017
202110
20228
202311
202410
202510
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 C07D333/56?
CPC C07D333/56 is the Cooperative Patent Classification code for “Radicals substituted by oxygen atoms.”
How many patents are filed under CPC C07D333/56 (Radicals substituted by oxygen atoms)?
Our database includes 127 publications tagged with this CPC code.
Is patent activity under CPC C07D333/56 growing?
Publication counts under this code: 10 in 2024 vs 10 in 2025 (latest complete years).