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 codeC23C30/005
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents1,722

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
2015118
201689
2017107
2018166
2019146
2020213
2021205
2022210
2023146
2024171
2025128
202623

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 C23C30/005?
CPC C23C30/005 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C23C30/005 (Chemistry & Metallurgy)?
Our database includes 1,722 publications tagged with this CPC code.
Is patent activity under CPC C23C30/005 growing?
Publication counts under this code: 171 in 2024 vs 128 in 2025 (latest complete years).