Collective exhaust system
US-12276421-B2 · Apr 15, 2025 · US
using devices responsive to thermal changes or to thermal expansion of a medium
using devices responsive to thermal changes or to thermal expansion of a medium · 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 | F23N5/02 |
| Official title | using devices responsive to thermal changes or to thermal expansion of a medium |
| Display label | using devices responsive to thermal changes or to thermal expansion of a medium |
| Total patents | 52 |
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 | 4 |
| 2018 | 6 |
| 2019 | 8 |
| 2020 | 3 |
| 2021 | 7 |
| 2022 | 10 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System, method and apparatus for testing and evaluating flame resistance
US-12163907-B2 · Dec 10, 2024 · US
Active and passive combustion stabilization for burners for highly and rapidly varying fuel gas compositions
US-12072097-B2 · Aug 27, 2024 · US
Monitoring and maintaining flare tip temperatures
US-2024011632-A1 · Jan 11, 2024 · US
Modulating oven burner control for gas cooking appliance
US-11754291-B2 · Sep 12, 2023 · US
Gas furnace and air conditioner having the same
US-2023141194-A1 · May 11, 2023 · US
Collective exhaust system
US-2022412558-A1 · Dec 29, 2022 · US
Evaporator assembly for mobile heating devices
US-11530813-B2 · Dec 20, 2022 · US
Method for controlling a combustion apparatus and control device
US-11525417-B2 · Dec 13, 2022 · US
Non-optical flame detector and method for a combustor of a turbine engine
US-11519292-B2 · Dec 6, 2022 · US
Temperature sensing and smart gas cooking
US-11497341-B2 · Nov 15, 2022 · US
Active and passive combustion stabilization for burners for highly and rapidly varying fuel gas compositions
US-2022307689-A1 · Sep 29, 2022 · US
Flame detector and method
US-2022307385-A1 · Sep 29, 2022 · US
System, method and apparatus for testing and evaluating flame resistance
US-2022170870-A1 · Jun 2, 2022 · US
Modulating oven burner control for gas cooking appliance
US-2022099302-A1 · Mar 31, 2022 · US
Method and system for auto-adjusting an active range of a gas cooking appliance
US-11262069-B2 · Mar 1, 2022 · US
Method and system for auto-adjusting an active range of a gas cooking appliance
US-2021404658-A1 · Dec 30, 2021 · US
Perforated flame holder support member for structural integrity
US-2021310650-A9 · Oct 7, 2021 · US
Combustion apparatus
US-11079138-B2 · Aug 3, 2021 · US
Evaporator assembly for mobile heating devices
US-2021215335-A1 · Jul 15, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F23N5/02?
- CPC F23N5/02 is the Cooperative Patent Classification code for “using devices responsive to thermal changes or to thermal expansion of a medium.”
- How many patents are filed under CPC F23N5/02 (using devices responsive to thermal changes or to thermal expansion of a medium)?
- Our database includes 52 publications tagged with this CPC code.
- Is patent activity under CPC F23N5/02 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).