by oxygen atoms

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 codeC07D211/22
Official titleby oxygen atoms
Display labelby oxygen atoms
Total patents379

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
201547
201642
201743
201841
201931
202037
202131
202227
202330
202426
202522
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 C07D211/22?
CPC C07D211/22 is the Cooperative Patent Classification code for “by oxygen atoms.”
How many patents are filed under CPC C07D211/22 (by oxygen atoms)?
Our database includes 379 publications tagged with this CPC code.
Is patent activity under CPC C07D211/22 growing?
Publication counts under this code: 26 in 2024 vs 22 in 2025 (latest complete years).