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 codeC09D11/033
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents2,035

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
201567
201674
2017157
2018154
2019230
2020253
2021256
2022273
2023187
2024174
2025173
202637

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 C09D11/033?
CPC C09D11/033 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C09D11/033 (Chemistry & Metallurgy)?
Our database includes 2,035 publications tagged with this CPC code.
Is patent activity under CPC C09D11/033 growing?
Publication counts under this code: 174 in 2024 vs 173 in 2025 (latest complete years).