Carbon

Carbon · 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 codeC25B11/065
Official titleCarbon
Display labelCarbon
Total patents427

Filing trend

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

Filing activity over the last five years is rapidly growing.

Patents filed per year
YearPatents
20154
20172
20184
20197
202010
202131
202247
202391
202476
2025125
202630

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 C25B11/065?
CPC C25B11/065 is the Cooperative Patent Classification code for “Carbon.”
How many patents are filed under CPC C25B11/065 (Carbon)?
Our database includes 427 publications tagged with this CPC code.
Is patent activity under CPC C25B11/065 growing?
Publication counts under this code: 76 in 2024 vs 125 in 2025 (latest complete years).