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 codeC23C4/005
Official title
Display labelChemistry & Metallurgy (mapped technology topic)
Total patents28

Filing trend

Year-over-year patent counts classified under this CPC code.

Filing activity appears to be declining based on the most recent years.

Patents filed per year
YearPatents
201515
201610
20173

Representative patents

Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.

Frequently asked questions

Answers are generated from the same data shown on this page.

What is CPC C23C4/005?
CPC C23C4/005 is the Cooperative Patent Classification code for “Chemistry & Metallurgy.”
How many patents are filed under CPC C23C4/005 (Chemistry & Metallurgy)?
Our database includes 28 publications tagged with this CPC code.
Is patent activity under CPC C23C4/005 growing?
Publication counts under this code: 10 in 2016 vs 3 in 2017 (latest complete years).