Chemistry & Metallurgy

Chemistry & Metallurgy · 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 codeC01P2004/34
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents319

Filing trend

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

Filing activity over the last five years is declining.

Patents filed per year
YearPatents
201523
201617
201729
201834
201931
202033
202133
202231
202324
202437
202521
20266

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

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Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C01P2004/34?
CPC C01P2004/34 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C01P2004/34 (Chemistry & Metallurgy)?
Our database includes 319 publications tagged with this CPC code.
Is patent activity under CPC C01P2004/34 growing?
Publication counts under this code: 37 in 2024 vs 21 in 2025 (latest complete years).