Hydrocarbons {(C11D3/164 takes precedence)}

Hydrocarbons {(C11D3/164 takes precedence)} · 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 codeC11D3/18
Official titleHydrocarbons {(C11D3/164 takes precedence)}
Display labelHydrocarbons {(C11D3/164 takes precedence)}
Total patents116

Filing trend

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

Filing activity over the last five years is stable.

Patents filed per year
YearPatents
201526
201618
201717
201810
201913
20208
20215
20222
20236
20245
20255
20261

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 C11D3/18?
CPC C11D3/18 is the Cooperative Patent Classification code for “Hydrocarbons {(C11D3/164 takes precedence)}.”
How many patents are filed under CPC C11D3/18 (Hydrocarbons {(C11D3/164 takes precedence)})?
Our database includes 116 publications tagged with this CPC code.
Is patent activity under CPC C11D3/18 growing?
Publication counts under this code: 5 in 2024 vs 5 in 2025 (latest complete years).