Engine having hotspot fuel igniter and piston and methodology using same
US-12565865-B2 · Mar 3, 2026 · US
the head being provided with an insert located in or on the combustion-gas-swept surface
the head being provided with an insert located in or on the combustion-gas-swept surface · 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 | F02F3/285 |
| Official title | {the head being provided with an insert located in or on the combustion-gas-swept surface} |
| Display label | the head being provided with an insert located in or on the combustion-gas-swept surface |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 10 |
| 2017 | 9 |
| 2018 | 7 |
| 2019 | 3 |
| 2020 | 1 |
| 2021 | 1 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Embedded piston structures
US-12435679-B2 · Oct 7, 2025 · US
Piston for an internal combustion engine, suitable for aerodynamic movement of gas
US-2025270968-A1 · Aug 28, 2025 · US
Engine having hotspot fuel igniter and piston and methodology using same
US-2025270969-A1 · Aug 28, 2025 · US
Embedded piston structures
US-2024263598-A1 · Aug 8, 2024 · US
Reciprocating-piston internal combustion engine
US-11873779-B2 · Jan 16, 2024 · US
Reciprocating-piston internal combustion engine
US-2023193849-A1 · Jun 22, 2023 · US
Internal combustion engine
US-10920712-B2 · Feb 16, 2021 · US
Multi-layered piston crown for opposed-piston engines
US-10634091-B2 · Apr 28, 2020 · US
Internal combustion engine
US-2019383230-A1 · Dec 19, 2019 · US
Complex-shaped forged piston oil galleries
US-10247134-B2 · Apr 2, 2019 · US
Multi-layered piston crown for opposed-piston engines
US-2019093597-A1 · Mar 28, 2019 · US
Multi-layered piston crown for opposed-piston engines
US-10119493-B2 · Nov 6, 2018 · US
Slide shoe for a piston for use in internal combustion engines
US-10047694-B2 · Aug 14, 2018 · US
Internal combustion engine
US-10012134-B2 · Jul 3, 2018 · US
Internal combustion engine
US-9951740-B2 · Apr 24, 2018 · US
Fuel injection apparatus
US-9951713-B2 · Apr 24, 2018 · US
Piston
US-9938927-B2 · Apr 10, 2018 · US
Multipoint ignition systems and methods
US-9915189-B2 · Mar 13, 2018 · US
Piston assembly for a reciprocating engine
US-9845765-B2 · Dec 19, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02F3/285?
- CPC F02F3/285 is the Cooperative Patent Classification code for “the head being provided with an insert located in or on the combustion-gas-swept surface.”
- How many patents are filed under CPC F02F3/285 (the head being provided with an insert located in or on the combustion-gas-swept surface)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC F02F3/285 growing?
- Publication counts under this code: 2 in 2024 vs 3 in 2025 (latest complete years).