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 codeC04B40/02
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents58

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
20155
20166
20174
20188
20198
202010
20214
20223
20235
20241
20253
20261

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 C04B40/02?
CPC C04B40/02 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C04B40/02 (Chemistry & Metallurgy)?
Our database includes 58 publications tagged with this CPC code.
Is patent activity under CPC C04B40/02 growing?
Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).
C04B40/02 | PatentsDB