PatentsDB

Manufacture of steel in the converter {(C21C5/005 takes precedence)}

Manufacture of steel in the converter {(C21C5/005 takes precedence)} · 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 codeC21C5/28
Official titleManufacture of steel in the converter {(C21C5/005 takes precedence)}
Display labelManufacture of steel in the converter {(C21C5/005 takes precedence)}
Total patents47

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
20152
20161
20173
20184
20194
20205
20213
20221
20233
20249
20253
20269

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 C21C5/28?
CPC C21C5/28 is the Cooperative Patent Classification code for “Manufacture of steel in the converter {(C21C5/005 takes precedence)}.”
How many patents are filed under CPC C21C5/28 (Manufacture of steel in the converter {(C21C5/005 takes precedence)})?
Our database includes 47 publications tagged with this CPC code.
Is patent activity under CPC C21C5/28 growing?
Publication counts under this code: 9 in 2024 vs 3 in 2025 (latest complete years).