Fuel Injection Systems for Snowmobiles
US-2026063096-A1 · Mar 5, 2026 · US
the devices being combustion-air intake or exhaust valves
the devices being combustion-air intake or exhaust valves · 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 | F02M57/04 |
| Official title | the devices being combustion-air intake or exhaust valves |
| Display label | the devices being combustion-air intake or exhaust valves |
| Total patents | 31 |
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 | 7 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 2 |
| 2020 | 7 |
| 2021 | 1 |
| 2022 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel injection systems for snowmobiles
US-12467426-B2 · Nov 11, 2025 · US
Fuel Injection Systems for Snowmobiles
US-2025243834-A1 · Jul 31, 2025 · US
Liquid and/or gaseous fuel delivery system and methods thereof
US-11293336-B2 · Apr 5, 2022 · US
Liquid and/or gaseous fuel delivery system and methods therof
US-2021277820-A1 · Sep 9, 2021 · US
Method for starting an engine
US-10859055-B1 · Dec 8, 2020 · US
System and method for valve seat injection
US-10808650-B2 · Oct 20, 2020 · US
High altitude internal combustion engine/turbocharger exhaust combustor
US-10746090-B2 · Aug 18, 2020 · US
System and method for valve seat injection
US-2020149497-A1 · May 14, 2020 · US
Hydraulic early engine exhaust valve opening system
US-10641140-B2 · May 5, 2020 · US
Fuel injector having three stages
US-10605153-B2 · Mar 31, 2020 · US
High altitude internal combustion engine/turbocharger exhaust combustor
US-2020063647-A1 · Feb 27, 2020 · US
Throttle body with fluid flow control
US-2019195144-A1 · Jun 27, 2019 · US
Gas injector including an outwardly opening valve closure element
US-10208711-B2 · Feb 19, 2019 · US
Outboard motor powerhead section and fuel delivery system having low-profile fuel rail
US-10161368-B1 · Dec 25, 2018 · US
Hydraulic Early Engine Exhaust Valve Opening System
US-2018328240-A1 · Nov 15, 2018 · US
Ducted combustion systems utilizing flow field preparation
US-10119456-B2 · Nov 6, 2018 · US
Ducted combustion systems utilizing flow field preparation
US-2018195430-A1 · Jul 12, 2018 · US
Combustion chamber assembly with an air swirler and a fuel injector having inter-engaging faces
US-10018167-B2 · Jul 10, 2018 · US
Fuel injector having three stages
US-2018119599-A1 · May 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02M57/04?
- CPC F02M57/04 is the Cooperative Patent Classification code for “the devices being combustion-air intake or exhaust valves.”
- How many patents are filed under CPC F02M57/04 (the devices being combustion-air intake or exhaust valves)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F02M57/04 growing?
- Publication counts under this code: 1 in 2022 vs 2 in 2025 (latest complete years).