System and method for controlling fuel substitution in a dual fuel engine system
US-12510033-B2 · Dec 30, 2025 · US
Treating or cleaning means; Fuel filters
Treating or cleaning means; Fuel filters · 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 | F02D19/0668 |
| Official title | {Treating or cleaning means; Fuel filters} |
| Display label | Treating or cleaning means; Fuel filters |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 5 |
| 2017 | 1 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 3 |
| 2021 | 5 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 1 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fuel supply device
US-12460603-B2 · Nov 4, 2025 · US
Systems and methods for actively managing pilot fuel storage tanks
US-12421908-B1 · Sep 23, 2025 · US
Fuel Supply System for Supplying a Fuel Emulsion to a Fuel Injection System of an Engine
US-2025188882-A1 · Jun 12, 2025 · US
Fuel supply device
US-2025163870-A1 · May 22, 2025 · US
System and method for controlling fuel substitution in a dual fuel engine system
US-2025092836-A1 · Mar 20, 2025 · US
Systems and methods for pilot fuel synthesis
US-12006886-B1 · Jun 11, 2024 · US
Vaporizing methanol using exhaust gas and an electrical heating component
US-11702999-B2 · Jul 18, 2023 · US
Vaporizing methanol using exhaust gas and an electrical heating component
US-2023184180-A1 · Jun 15, 2023 · US
Engine
US-11661912-B2 · May 30, 2023 · US
Engine
US-2022307453-A1 · Sep 29, 2022 · US
Engine
US-11391254-B2 · Jul 19, 2022 · US
Engine
US-2021301773-A1 · Sep 30, 2021 · US
Engine
US-11060491-B2 · Jul 13, 2021 · US
Fuel switchover control system for a multi-fuel generator
US-11047297-B2 · Jun 29, 2021 · US
Adaptive protection for a multi-fuel generator system
US-11041434-B2 · Jun 22, 2021 · US
Apparatus and method for unclogging a filter of a pumping group for pumping diesel to an internal combustion engine
US-11008990-B2 · May 18, 2021 · US
Engine
US-2020291876-A1 · Sep 17, 2020 · US
Engine
US-10718278-B2 · Jul 21, 2020 · US
Fuel switchover control system for a multi-fuel generator
US-2020123972-A1 · Apr 23, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F02D19/0668?
- CPC F02D19/0668 is the Cooperative Patent Classification code for “Treating or cleaning means; Fuel filters.”
- How many patents are filed under CPC F02D19/0668 (Treating or cleaning means; Fuel filters)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC F02D19/0668 growing?
- Publication counts under this code: 1 in 2024 vs 6 in 2025 (latest complete years).