Oxides; Hydroxides

Oxides; Hydroxides · 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 codeC01G3/02
Official titleOxides; Hydroxides
Display labelOxides; Hydroxides
Total patents201

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
201614
201717
201824
201912
202024
202122
202216
202318
202421
202520
20263

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 C01G3/02?
CPC C01G3/02 is the Cooperative Patent Classification code for “Oxides; Hydroxides.”
How many patents are filed under CPC C01G3/02 (Oxides; Hydroxides)?
Our database includes 201 publications tagged with this CPC code.
Is patent activity under CPC C01G3/02 growing?
Publication counts under this code: 21 in 2024 vs 20 in 2025 (latest complete years).