What is CPC F04C2240/804?

CPC F04C2240/804 is the Cooperative Patent Classification code for “Accumulators for refrigerant circuits.”

How many patents are filed under CPC F04C2240/804 (Accumulators for refrigerant circuits)?

Our database includes 51 publications tagged with this CPC code.

Publication counts under this code: 11 in 2024 vs 4 in 2025 (latest complete years).

Accumulators for refrigerant circuits · 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	F04C2240/804
Official title	Accumulators for refrigerant circuits
Display label	Accumulators for refrigerant circuits
Total patents	51

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

Filing activity over the last five years is declining.

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 F04C2240/804?: CPC F04C2240/804 is the Cooperative Patent Classification code for “Accumulators for refrigerant circuits.”
How many patents are filed under CPC F04C2240/804 (Accumulators for refrigerant circuits)?: Our database includes 51 publications tagged with this CPC code.
Is patent activity under CPC F04C2240/804 growing?: Publication counts under this code: 11 in 2024 vs 4 in 2025 (latest complete years).