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 codeC01B21/072
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents150

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
201514
20165
20178
20189
201921
202021
202117
202213
202315
202415
202511
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 C01B21/072?
CPC C01B21/072 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C01B21/072 (Chemistry & Metallurgy)?
Our database includes 150 publications tagged with this CPC code.
Is patent activity under CPC C01B21/072 growing?
Publication counts under this code: 15 in 2024 vs 11 in 2025 (latest complete years).