What is CPC F24B13/04?

CPC F24B13/04 is the Cooperative Patent Classification code for “Arrangements for feeding solid fuel, e.g. hoppers.”

How many patents are filed under CPC F24B13/04 (Arrangements for feeding solid fuel, e.g. hoppers)?

Our database includes 72 publications tagged with this CPC code.

Publication counts under this code: 7 in 2024 vs 8 in 2025 (latest complete years).

Arrangements for feeding solid fuel, e.g. hoppers · Cooperative Patent Classification (CPC)

Engines, pumps, lighting, heating, and mechanical systems.

Mapped technology topics for this CPC code.

CPC classification statistics
Metric	Value
CPC code	F24B13/04
Official title	Arrangements for feeding solid fuel, e.g. hoppers
Display label	Arrangements for feeding solid fuel, e.g. hoppers
Total patents	72

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

Filing activity over the last five years is stable.

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

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

What is CPC F24B13/04?: CPC F24B13/04 is the Cooperative Patent Classification code for “Arrangements for feeding solid fuel, e.g. hoppers.”
How many patents are filed under CPC F24B13/04 (Arrangements for feeding solid fuel, e.g. hoppers)?: Our database includes 72 publications tagged with this CPC code.
Is patent activity under CPC F24B13/04 growing?: Publication counts under this code: 7 in 2024 vs 8 in 2025 (latest complete years).