Combustion chamber and gas apparatus
US-12442531-B2 · Oct 14, 2025 · US
Heating of air supplied for combustion
Heating of air supplied for combustion · 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 | F23L15/00 |
| Official title | Heating of air supplied for combustion |
| Display label | Heating of air supplied for combustion |
| Total patents | 44 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 12 |
| 2018 | 2 |
| 2019 | 2 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Can drying and moisture control system
US-12405058-B2 · Sep 2, 2025 · US
Oxy-PFBC temperature management through staged gas injection and gas velocity management
US-12338991-B2 · Jun 24, 2025 · US
Cooler for cooling bulk material, in particular cement clinker
US-12305922-B2 · May 20, 2025 · US
Dual-medium turbulent fluidized bed gasification incinerator and implementation method of waste gasification incineration
US-2025035308-A1 · Jan 30, 2025 · US
Reforming furnace
US-12179165-B2 · Dec 31, 2024 · US
Flame control in an oxyfuel combustion process
US-12173655-B2 · Dec 24, 2024 · US
Method for reducing NOX emission
US-11959639-B2 · Apr 16, 2024 · US
Cooler for cooling bulk material, in particular cement clinker
US-2023128260-A1 · Apr 27, 2023 · US
Process and apparatus for recovering energy from low energy density gas stream
US-11614231-B1 · Mar 28, 2023 · US
Can Drying and Moisture Control System
US-2023051688-A1 · Feb 16, 2023 · US
Combustion chamber and gas apparatus
US-2022373178-A1 · Nov 24, 2022 · US
Flame control in an oxyfuel combustion process
US-2022275759-A1 · Sep 1, 2022 · US
Reforming Furnace
US-2022152576-A1 · May 19, 2022 · US
Oil boiler
US-11131481-B2 · Sep 28, 2021 · US
Gas turbine
US-11118512-B2 · Sep 14, 2021 · US
METHOD FOR REDUCING NOx EMISSION
US-2020378599-A1 · Dec 3, 2020 · US
Oil boiler
US-2020348048-A1 · Nov 5, 2020 · US
Temperature balancing for thermal integration of an air separation unit (ASU) with a power generation system
US-10712088-B1 · Jul 14, 2020 · US
Combustion system
US-10563863-B2 · Feb 18, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23L15/00?
- CPC F23L15/00 is the Cooperative Patent Classification code for “Heating of air supplied for combustion.”
- How many patents are filed under CPC F23L15/00 (Heating of air supplied for combustion)?
- Our database includes 44 publications tagged with this CPC code.
- Is patent activity under CPC F23L15/00 growing?
- Publication counts under this code: 3 in 2024 vs 5 in 2025 (latest complete years).