Treatment of aluminium or alloys based thereon

Treatment of aluminium or alloys based thereon · 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 codeC23C22/66
Official titleTreatment of aluminium or alloys based thereon
Display labelTreatment of aluminium or alloys based thereon
Total patents120

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
201514
201612
201712
201815
201911
202014
20219
20228
20239
202411
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 C23C22/66?
CPC C23C22/66 is the Cooperative Patent Classification code for “Treatment of aluminium or alloys based thereon.”
How many patents are filed under CPC C23C22/66 (Treatment of aluminium or alloys based thereon)?
Our database includes 120 publications tagged with this CPC code.
Is patent activity under CPC C23C22/66 growing?
Publication counts under this code: 11 in 2024 vs 4 in 2025 (latest complete years).