two oxygen atoms

two 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 codeC07D473/04
Official titletwo oxygen atoms
Display labeltwo oxygen atoms
Total patents130

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
201528
201618
201721
201811
20199
202014
202110
20226
20235
20243
20254
20261

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 C07D473/04?
CPC C07D473/04 is the Cooperative Patent Classification code for “two oxygen atoms.”
How many patents are filed under CPC C07D473/04 (two oxygen atoms)?
Our database includes 130 publications tagged with this CPC code.
Is patent activity under CPC C07D473/04 growing?
Publication counts under this code: 3 in 2024 vs 4 in 2025 (latest complete years).