Systems and methods for hybrid heating system control
US-2026055928-A1 · Feb 26, 2026 · US
using fluid fuel
using fluid fuel · 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 | F24H3/025 |
| Official title | {using fluid fuel} |
| Display label | using fluid fuel |
| Total patents | 42 |
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 | 3 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 6 |
| 2020 | 2 |
| 2021 | 7 |
| 2022 | 5 |
| 2023 | 5 |
| 2024 | 6 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and Methods for Detecting Pressure in a Gas Furnace
US-2025067474-A1 · Feb 27, 2025 · US
Sound attenuation for HVAC devices
US-12235012-B2 · Feb 25, 2025 · US
Heater
US-12181184-B2 · Dec 31, 2024 · US
Fan assisted personal heater device
US-2024418407-A1 · Dec 19, 2024 · US
Hybrid fireplace with display
US-2024344704-A1 · Oct 17, 2024 · US
Heat exchanger transfer tubes
US-12072153-B2 · Aug 27, 2024 · US
Burner assembly having a baffle
US-11953200-B2 · Apr 9, 2024 · US
Air conditioning system
US-11879650-B2 · Jan 23, 2024 · US
Sound attenuation for hvac devices
US-2023408142-A1 · Dec 21, 2023 · US
Gas furnace
US-11747039-B2 · Sep 5, 2023 · US
Sound attenuation for HVAC devices
US-11725846-B2 · Aug 15, 2023 · US
Variable capacity furnace
US-2023235922-A1 · Jul 27, 2023 · US
Heat exchanger transfer tubes
US-2023038602-A1 · Feb 9, 2023 · US
Heater
US-2022371395-A1 · Nov 24, 2022 · US
Heat exchanger transfer tubes
US-11480392-B2 · Oct 25, 2022 · US
Sound attenuation for hvac devices
US-2022316756-A1 · Oct 6, 2022 · US
Carrier device
US-11305613-B2 · Apr 19, 2022 · US
Device For Disinfecting Air By Means Of Combustion
US-2022096696-A1 · Mar 31, 2022 · US
Air conditioning system
US-2021318012-A1 · Oct 14, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24H3/025?
- CPC F24H3/025 is the Cooperative Patent Classification code for “using fluid fuel.”
- How many patents are filed under CPC F24H3/025 (using fluid fuel)?
- Our database includes 42 publications tagged with this CPC code.
- Is patent activity under CPC F24H3/025 growing?
- Publication counts under this code: 6 in 2024 vs 2 in 2025 (latest complete years).