Air-cooled, four-stroke aviation engine
US-2026022676-A1 · Jan 22, 2026 · US
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for air cooling
for air cooling · 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 | F02F1/28 |
| Official title | for air cooling |
| Display label | for air cooling |
| Total patents | 17 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 1 |
| 2017 | 4 |
| 2018 | 4 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 1 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air-cooled, four-stroke aviation engine
US-12429010-B2 · Sep 30, 2025 · US
Air-cooled, four-stroke aviation engine
US-2024337227-A1 · Oct 10, 2024 · US
Air-cooled, four-stroke aviation engine
US-12012910-B2 · Jun 18, 2024 · US
Methods and systems for fuel injection control
US-11359568-B1 · Jun 14, 2022 · US
Cylinder head cooling structure
US-10598122-B2 · Mar 24, 2020 · US
Welded engine block for small internal combustion engines
US-10202938-B2 · Feb 12, 2019 · US
Engine block including an integrated flow channel
US-2018328310-A1 · Nov 15, 2018 · US
Engine block including an integrated flow channel
US-10125718-B1 · Nov 13, 2018 · US
Air/oil-cooled internal combustion engine
US-10041394-B2 · Aug 7, 2018 · US
Welded engine block for small internal combustion engines
US-9856822-B2 · Jan 2, 2018 · US
Cylinder head cooling structure
US-2017184051-A1 · Jun 29, 2017 · US
Welded engine block for small internal combustion engines
US-2017145953-A1 · May 25, 2017 · US
Welded engine block for small internal combustion engines
US-9581106-B2 · Feb 28, 2017 · US
Air/oil-cooled internal combustion engine
US-2017009640-A1 · Jan 12, 2017 · US
Welded engine block for small internal combustion engines
US-2016369741-A1 · Dec 22, 2016 · US
Welded engine block for small internal combustion engines
US-2015096523-A1 · Apr 9, 2015 · US