Systems and methods for at-cylinder fuel switching
US-12535041-B2 · Jan 27, 2026 · US
Multi-way valves; Switch-over valves
Multi-way valves; Switch-over 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 | F02D19/0676 |
| Official title | {Multi-way valves; Switch-over valves} |
| Display label | Multi-way valves; Switch-over valves |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 2 |
| 2017 | 3 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Dual fuel system having overflow buffer for hastening fuel switchover
US-12359632-B1 · Jul 15, 2025 · US
Systems and methods for at-cylinder fuel switching
US-2025179970-A1 · Jun 5, 2025 · US
Dual fuel selector switch
US-2025163860-A1 · May 22, 2025 · US
Dual fuel selector switch
US-2025154912-A1 · May 15, 2025 · US
Dual fuel selector switch
US-2024183321-A1 · Jun 6, 2024 · US
Dual fuel selector switch
US-11905896-B2 · Feb 20, 2024 · US
Dual fuel selector switch
US-2023313747-A1 · Oct 5, 2023 · US
Dual fuel selector switch
US-11761390-B2 · Sep 19, 2023 · US
Dual-fuel internal combustion engine
US-11585303-B2 · Feb 21, 2023 · US
Dual fuel selector switch
US-2022170421-A1 · Jun 2, 2022 · US
Dual fuel selector switch
US-11306667-B2 · Apr 19, 2022 · US
Methods and systems for operating a vehicle with two fuel tanks
US-11300083-B1 · Apr 12, 2022 · US
Dual-fuel internal combustion engine
US-2021404427-A1 · Dec 30, 2021 · US
Integrated fuel filter device for vehicle
US-11085381-B2 · Aug 10, 2021 · US
Integrated Fuel Filter Device for Vehicle
US-2021123401-A1 · Apr 29, 2021 · US
Control device for internal combustion engine and control method for internal combustion engine
US-10837372-B2 · Nov 17, 2020 · US
Dual fuel selector switch
US-2020182166-A1 · Jun 11, 2020 · US
Dual fuel selector switch
US-10598101-B2 · Mar 24, 2020 · US
Control device for internal combustion engine and control method for internal combustion engine
US-2019153965-A1 · May 23, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D19/0676?
- CPC F02D19/0676 is the Cooperative Patent Classification code for “Multi-way valves; Switch-over valves.”
- How many patents are filed under CPC F02D19/0676 (Multi-way valves; Switch-over valves)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC F02D19/0676 growing?
- Publication counts under this code: 2 in 2024 vs 4 in 2025 (latest complete years).