with only C, Mn, Si, P, S, As as alloying elements, e.g. carbon steel

with only C, Mn, Si, P, S, As as alloying elements, e.g. carbon steel · 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 codeC22C33/0271
Official title{with only C, Mn, Si, P, S, As as alloying elements, e.g. carbon steel}
Display labelwith only C, Mn, Si, P, S, As as alloying elements, e.g. carbon steel
Total patents47

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
20151
20162
20171
20195
20204
20216
20221
20233
20243
202517
20264

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 C22C33/0271?
CPC C22C33/0271 is the Cooperative Patent Classification code for “with only C, Mn, Si, P, S, As as alloying elements, e.g. carbon steel.”
How many patents are filed under CPC C22C33/0271 (with only C, Mn, Si, P, S, As as alloying elements, e.g. carbon steel)?
Our database includes 47 publications tagged with this CPC code.
Is patent activity under CPC C22C33/0271 growing?
Publication counts under this code: 3 in 2024 vs 17 in 2025 (latest complete years).