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 codeC03C4/02
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents617

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
201544
201638
201751
201850
201953
202057
202152
202271
202378
202460
202551
202612

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 C03C4/02?
CPC C03C4/02 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C03C4/02 (Chemistry & Metallurgy)?
Our database includes 617 publications tagged with this CPC code.
Is patent activity under CPC C03C4/02 growing?
Publication counts under this code: 60 in 2024 vs 51 in 2025 (latest complete years).