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 codeC08K2003/321
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents253

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
201511
201617
201710
201822
201932
202030
202128
202232
202330
202421
202517
20263

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 C08K2003/321?
CPC C08K2003/321 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C08K2003/321 (Chemistry & Metallurgy)?
Our database includes 253 publications tagged with this CPC code.
Is patent activity under CPC C08K2003/321 growing?
Publication counts under this code: 21 in 2024 vs 17 in 2025 (latest complete years).