System and method for liquid fuel flushing for dual fuel turbines
US-12428994-B2 · Sep 30, 2025 · US
Cleaning or purging devices, e.g. filters
Cleaning or purging devices, e.g. 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 | F23K5/18 |
| Official title | Cleaning or purging devices, e.g. filters |
| Display label | Cleaning or purging devices, e.g. filters |
| Total patents | 63 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 10 |
| 2017 | 8 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 6 |
| 2025 | 4 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Methods and apparatus to regulate a gaseous fuel system
US-2025230774-A1 · Jul 17, 2025 · US
System and method for liquid fuel flushing for dual fuel turbines
US-2025146667-A1 · May 8, 2025 · US
Mobile heating device, and method for operating a mobile heating device
US-2024353101-A1 · Oct 24, 2024 · US
An arrangement handling purged alcohol-based fuel and a method thereof
US-2024255144-A1 · Aug 1, 2024 · US
Method and arrangement for handling vent gas mixture
US-2024255141-A1 · Aug 1, 2024 · US
Fuel oxygen conversion unit with integrated water removal
US-11906163-B2 · Feb 20, 2024 · US
Fuel systems and methods for purging
US-2024044294-A1 · Feb 8, 2024 · US
Fluid injection systems having fluid line purging
US-11859553-B2 · Jan 2, 2024 · US
Fuel systems and methods for purging
US-11808219-B2 · Nov 7, 2023 · US
Fluid injection systems for fluid line purging
US-11680549-B2 · Jun 20, 2023 · US
Fuel systems and methods for purging
US-2022325668-A1 · Oct 13, 2022 · US
Fluid injection systems having fluid line purging
US-2022010730-A1 · Jan 13, 2022 · US
Fuel oxygen conversion unit with a fuel gas separator
US-11193671-B2 · Dec 7, 2021 · US
Fuel oxygen conversion unit with integrated water removal
US-2021341145-A1 · Nov 4, 2021 · US
Fluid injection systems having fluid line purging
US-11156163-B2 · Oct 26, 2021 · US
Fuel oxygen conversion unit
US-11085636-B2 · Aug 10, 2021 · US
Fluid injection systems for fluid line purging
US-2021102515-A1 · Apr 8, 2021 · US
Fluid injection systems having fluid line purging
US-2021102495-A1 · Apr 8, 2021 · US
Fuel Oxygen Conversion Unit
US-2020141574-A1 · May 7, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23K5/18?
- CPC F23K5/18 is the Cooperative Patent Classification code for “Cleaning or purging devices, e.g. filters.”
- How many patents are filed under CPC F23K5/18 (Cleaning or purging devices, e.g. filters)?
- Our database includes 63 publications tagged with this CPC code.
- Is patent activity under CPC F23K5/18 growing?
- Publication counts under this code: 6 in 2024 vs 4 in 2025 (latest complete years).