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 codeC08L71/02
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents2,850

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
2015223
2016249
2017236
2018284
2019298
2020312
2021316
2022228
2023256
2024214
2025188
202646

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 C08L71/02?
CPC C08L71/02 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C08L71/02 (Chemistry & Metallurgy)?
Our database includes 2,850 publications tagged with this CPC code.
Is patent activity under CPC C08L71/02 growing?
Publication counts under this code: 214 in 2024 vs 188 in 2025 (latest complete years).