of iron

of iron · 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 codeC25D3/20
Official titleof iron
Display labelof iron
Total patents113

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
20156
20168
201710
20184
201910
20207
20216
20229
202317
202415
202518
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 C25D3/20?
CPC C25D3/20 is the Cooperative Patent Classification code for “of iron.”
How many patents are filed under CPC C25D3/20 (of iron)?
Our database includes 113 publications tagged with this CPC code.
Is patent activity under CPC C25D3/20 growing?
Publication counts under this code: 15 in 2024 vs 18 in 2025 (latest complete years).