the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration

the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration · Cooperative Patent Classification (CPC)

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

Related technology areas

Mapped technology topics for this CPC code.

CPC classification statistics
MetricValue
CPC codeF28D7/022
Official title{the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration}
Display labelthe conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration
Total patents87

Filing trend

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

Filing activity over the last five years is rapidly declining.

Patents filed per year
YearPatents
20151
20165
201710
20185
20195
20208
202115
20228
202316
20249
20255

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 F28D7/022?
CPC F28D7/022 is the Cooperative Patent Classification code for “the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration.”
How many patents are filed under CPC F28D7/022 (the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration)?
Our database includes 87 publications tagged with this CPC code.
Is patent activity under CPC F28D7/022 growing?
Publication counts under this code: 9 in 2024 vs 5 in 2025 (latest complete years).