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 codeC40B40/02
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents390

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
201524
201623
201723
201819
201951
202051
202147
202242
202344
202431
202524
202611

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 C40B40/02?
CPC C40B40/02 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C40B40/02 (Chemistry & Metallurgy)?
Our database includes 390 publications tagged with this CPC code.
Is patent activity under CPC C40B40/02 growing?
Publication counts under this code: 31 in 2024 vs 24 in 2025 (latest complete years).