Process control or regulation for heat treatments

Process control or regulation for heat treatments · 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 codeC21D11/00
Official titleProcess control or regulation for heat treatments
Display labelProcess control or regulation for heat treatments
Total patents367

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
201529
201622
201728
201831
201928
202038
202129
202243
202329
202440
202539
202611

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 C21D11/00?
CPC C21D11/00 is the Cooperative Patent Classification code for “Process control or regulation for heat treatments.”
How many patents are filed under CPC C21D11/00 (Process control or regulation for heat treatments)?
Our database includes 367 publications tagged with this CPC code.
Is patent activity under CPC C21D11/00 growing?
Publication counts under this code: 40 in 2024 vs 39 in 2025 (latest complete years).