Gas turbine engine with air/fuel heat exchanger
US-9771867-B2 · Sep 26, 2017 · 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 | F28F9/026 |
| Official title | — |
| Display label | Mechanical Engineering (mapped technology topic) |
| Total patents | 304 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 25 |
| 2016 | 30 |
| 2017 | 35 |
| 2018 | 24 |
| 2019 | 33 |
| 2020 | 41 |
| 2021 | 33 |
| 2022 | 19 |
| 2023 | 26 |
| 2024 | 16 |
| 2025 | 19 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Condenser with external subcooler
US-2017176066-A1 · Jun 22, 2017 · US
Absorber with a spiral plate exchanger with a homogeneous fluid supply
US-9644871-B2 · May 9, 2017 · US
Heat exchanger and cooling system for generator electronics cooling
US-2017081040-A1 · Mar 23, 2017 · US
Heat exchanger
US-9546824-B2 · Jan 17, 2017 · US
Condensation and falling film evaporation hybrid heat exchanger
US-2016377331-A1 · Dec 29, 2016 · US
Cooling plate and data processing system provided with cooling plates
US-2016366793-A1 · Dec 15, 2016 · US
Expandable stacked plate heat exchanger for a battery unit
US-9520626-B2 · Dec 13, 2016 · US
Heat Exchanger with Regional Flow Distribution for Uniform Cooling of Battery Cells
US-2016359211-A1 · Dec 8, 2016 · US
Heat exchanger with flexible port elevation and mixing
US-2016348982-A1 · Dec 1, 2016 · US
Heat exchanger and air conditioner
US-9494368-B2 · Nov 15, 2016 · US
Liquid to Refrigerant Heat Exchanger, and Method of Operating the Same
US-2016320141-A1 · Nov 3, 2016 · US
Flash gas bypass evaporator
US-2016298890-A1 · Oct 13, 2016 · US
Cooling Element
US-2016285145-A1 · Sep 29, 2016 · US
Heat exchanger for steam generator and steam generator comprising same
US-2016282064-A1 · Sep 29, 2016 · US
Reactor system for producing hydrocarbons from synthetic gas
US-9446370-B2 · Sep 20, 2016 · US
Air conditioner and evaporator inlet header distributor therefor
US-2016252282-A1 · Sep 1, 2016 · US
Heat exchanger and air-conditioning apparatus
US-2016245596-A1 · Aug 25, 2016 · US
Additive manufactured ducted heat exchanger system with additively manufactured header
US-2016231068-A1 · Aug 11, 2016 · US
Heat exchanger with clam-shell header
US-2016231067-A1 · Aug 11, 2016 · US
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F28F9/026?
- CPC F28F9/026 is the Cooperative Patent Classification code for “Mechanical Engineering.”
- How many patents are filed under CPC F28F9/026 (Mechanical Engineering)?
- Our database includes 304 publications tagged with this CPC code.
- Is patent activity under CPC F28F9/026 growing?
- Publication counts under this code: 16 in 2024 vs 19 in 2025 (latest complete years).