Heat exchanger and cooling method
US-11994346-B2 · May 28, 2024 · US
Mechanical Engineering
Mechanical Engineering · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F28F9/22 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 514 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 29 |
| 2016 | 34 |
| 2017 | 36 |
| 2018 | 47 |
| 2019 | 48 |
| 2020 | 59 |
| 2021 | 61 |
| 2022 | 61 |
| 2023 | 51 |
| 2024 | 48 |
| 2025 | 33 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Bypassing a removed element in a liquid cooling system
US-2016377358-A1 · Dec 29, 2016 · US
Passive Radiative Dry Cooling Module/System Using Metamaterials
US-2016363394-A1 · Dec 15, 2016 · US
Heat exchanger and air conditioner
US-9494368-B2 · Nov 15, 2016 · US
Fluid heat exchange apparatus
US-2016327351-A1 · Nov 10, 2016 · US
Subcooler and air conditioner including the same
US-2016313036-A1 · Oct 27, 2016 · US
Shell-and-tube heat exchangers with foam heat transfer units
US-9464847-B2 · Oct 11, 2016 · US
Heat exchanger
US-2016290742-A1 · Oct 6, 2016 · US
Heat exchanger for aircrafts
US-2016280389-A1 · Sep 29, 2016 · US
Water Cooled Microchannel Condenser
US-2016265814-A1 · Sep 15, 2016 · US
Shell and tube heat exchanger with split shell and method of using
US-2016258690-A1 · Sep 8, 2016 · US
Fluid heat exchange apparatus
US-9423189-B2 · Aug 23, 2016 · US
Vapor compression system
US-2016238291-A1 · Aug 18, 2016 · US
Binary power generation system
US-9410535-B2 · Aug 9, 2016 · US
Air cooler, intercooler and nuclear facility
US-2016203880-A1 · Jul 14, 2016 · US
Heat transfer plate
US-2016187076-A1 · Jun 30, 2016 · US
Heat exchanger
US-2016169599-A1 · Jun 16, 2016 · US
Pressure difference driven heat spreader
US-9353996-B2 · May 31, 2016 · US
Shell and tube heat exchanger
US-2016146542-A1 · May 26, 2016 · US
Co-Axial Valve Apparatus
US-2016146554-A1 · May 26, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F9/22?
- CPC F28F9/22 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F28F9/22 (Mechanical Engineering)?
- Our database includes 514 publications tagged with this CPC code.
- Is patent activity under CPC F28F9/22 growing?
- Publication counts under this code: 48 in 2024 vs 33 in 2025 (latest complete years).