Aircraft engine combustor
US-2026036300-A1 · Feb 5, 2026 · US
Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space · 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 | F23D11/00 |
| Official title | Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space |
| Display label | Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space |
| Total patents | 31 |
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 | 1 |
| 2016 | 4 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 1 |
| 2023 | 4 |
| 2024 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Burner and combustor
US-11953206-B2 · Apr 9, 2024 · US
Combustion chamber assembly unit for a fuel-operated vehicle heater
US-11772455-B2 · Oct 3, 2023 · US
Vehicle heater
US-11752834-B2 · Sep 12, 2023 · US
Burner and combustor
US-2023167976-A1 · Jun 1, 2023 · US
Liquid fuel injector
US-11649963-B2 · May 16, 2023 · US
Vehicle heater
US-11345214-B2 · May 31, 2022 · US
Evaporator unit for a fuel-operated vehicle heater
US-11198347-B2 · Dec 14, 2021 · US
Combustion chamber assembly unit for a fuel-operated vehicle heater
US-2021283985-A1 · Sep 16, 2021 · US
Air swirler arrangement for a fuel injector of a combustion chamber
US-11085643-B2 · Aug 10, 2021 · US
Vehicle heater
US-2021229524-A1 · Jul 29, 2021 · US
Vehicle heater
US-2021213804-A1 · Jul 15, 2021 · US
Liquid fuel injector
US-2021025594-A1 · Jan 28, 2021 · US
Miniature liquid combustor having double pre-heating structure, and combustion method thereof
US-10865982-B2 · Dec 15, 2020 · US
Evaporator unit for a fuel-operated vehicle heater
US-2020384832-A1 · Dec 10, 2020 · US
Combustor mixer purge cooling structure
US-10801726-B2 · Oct 13, 2020 · US
Process for the recovery of precious metal from petrochemical process residues
US-10662500-B2 · May 26, 2020 · US
Vehicle heater
US-2020055374-A1 · Feb 20, 2020 · US
Multi-point injection device for an aircraft engine
US-10465910-B2 · Nov 5, 2019 · US
Exhaust duct
US-10443480-B2 · Oct 15, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23D11/00?
- CPC F23D11/00 is the Cooperative Patent Classification code for “Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space.”
- How many patents are filed under CPC F23D11/00 (Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space)?
- Our database includes 31 publications tagged with this CPC code.
- Is patent activity under CPC F23D11/00 growing?
- Publication counts under this code: 4 in 2023 vs 1 in 2024 (latest complete years).