Cooling or quenching

Cooling or quenching · 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 codeC23C2/29
Official title{Cooling or quenching}
Display labelCooling or quenching
Total patents1,135

Filing trend

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

Filing activity over the last five years is growing.

Patents filed per year
YearPatents
201549
201654
201779
201879
201995
2020115
2021107
2022122
2023128
2024131
2025137
202639

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 C23C2/29?
CPC C23C2/29 is the Cooperative Patent Classification code for “Cooling or quenching.”
How many patents are filed under CPC C23C2/29 (Cooling or quenching)?
Our database includes 1,135 publications tagged with this CPC code.
Is patent activity under CPC C23C2/29 growing?
Publication counts under this code: 131 in 2024 vs 137 in 2025 (latest complete years).