Combustion section with a primary combustor and a set of secondary combustors
US-12560324-B2 · Feb 24, 2026 · US
Combustion chambers comprising a tangential or helicoidal arrangement of the flame tubes
Combustion chambers comprising a tangential or helicoidal arrangement of the flame tubes · 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 | F23R3/425 |
| Official title | {Combustion chambers comprising a tangential or helicoidal arrangement of the flame tubes} |
| Display label | Combustion chambers comprising a tangential or helicoidal arrangement of the flame tubes |
| Total patents | 58 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 4 |
| 2017 | 15 |
| 2018 | 12 |
| 2019 | 6 |
| 2020 | 2 |
| 2021 | 6 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Combustion section with a primary combustor and a set of secondary combustors
US-12429220-B2 · Sep 30, 2025 · US
Combustion section with a primary combustor and a set of secondary combustors
US-2025075910-A1 · Mar 6, 2025 · US
Combustion section with a primary combustor and a set of secondary combustors
US-2024418369-A1 · Dec 19, 2024 · US
Turbine engine assembly including a rotating detonation combustor
US-12092336-B2 · Sep 17, 2024 · US
Volute trapped vortex combustor assembly
US-11906168-B2 · Feb 20, 2024 · US
Bimodal combustion system
US-2023280035-A1 · Sep 7, 2023 · US
Gas turbine combustor and transition piece assembly
US-11391168-B2 · Jul 19, 2022 · US
Turbine scroll assembly for gas turbine engine
US-11293292-B2 · Apr 5, 2022 · US
Volute trapped vortex combustor assembly
US-2021293412-A1 · Sep 23, 2021 · US
Bent combustion chamber from a turbine engine
US-11125435-B2 · Sep 21, 2021 · US
Turbine engine assembly including a rotating detonation combustor
US-2021190320-A1 · Jun 24, 2021 · US
Volute trapped vortex combustor assembly
US-10976052-B2 · Apr 13, 2021 · US
Turbine engine assembly including a rotating detonation combustor
US-10969107-B2 · Apr 6, 2021 · US
Continuous detonation wave engine and aircraft provided with such an engine
US-10895221-B2 · Jan 19, 2021 · US
Turbine scroll assembly for gas turbine engine
US-2020182471-A1 · Jun 11, 2020 · US
Turbine scroll assembly for gas turbine engine
US-10655859-B2 · May 19, 2020 · US
Gas Turbine Combustor and Transition Piece Assembly
US-2019264571-A1 · Aug 29, 2019 · US
Fuel and air injection handling system for a combustor of a rotating detonation engine
US-2019120492-A1 · Apr 25, 2019 · US
Volute trapped vortex combustor assembly
US-2019120491-A1 · Apr 25, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23R3/425?
- CPC F23R3/425 is the Cooperative Patent Classification code for “Combustion chambers comprising a tangential or helicoidal arrangement of the flame tubes.”
- How many patents are filed under CPC F23R3/425 (Combustion chambers comprising a tangential or helicoidal arrangement of the flame tubes)?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC F23R3/425 growing?
- Publication counts under this code: 3 in 2024 vs 2 in 2025 (latest complete years).