Thermal system with exhaust heat exchanger
US-2026071775-A1 · Mar 12, 2026 · US
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Ventilation air
Ventilation air · 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 | F24D2200/22 |
| Official title | Ventilation air |
| Display label | Ventilation air |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 2 |
| 2017 | 3 |
| 2018 | 1 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Thermal system with exhaust heat exchanger
US-12474079-B2 · Nov 18, 2025 · US
Dual source heat pump system with mutual duct
US-2025230946-A1 · Jul 17, 2025 · US
Thermal system with exhaust heat exchanger
US-2025129965-A1 · Apr 24, 2025 · US
Heating system
US-12163670-B2 · Dec 10, 2024 · US
Refrigeration cycle apparatus
US-11592203-B2 · Feb 28, 2023 · US
Heating system
US-2023003395-A1 · Jan 5, 2023 · US
Heating system
US-11473785-B2 · Oct 18, 2022 · US
Method and apparatus for reduction of water re-evaporation in a dedicated dehumidifier/water heater
US-11143417-B2 · Oct 12, 2021 · US
Heating system
US-2021102712-A1 · Apr 8, 2021 · US
Method and apparatus for reduction of water re-evaporation in a dedicated dehumidifier/water heater
US-2020309384-A1 · Oct 1, 2020 · US
Refrigeration cycle apparatus
US-2020300513-A1 · Sep 24, 2020 · US
Method and apparatus for reduction of water re-evaporation in a dedicated dehumidifier/water heater
US-10724744-B2 · Jul 28, 2020 · US
Method and apparatus for reduction of water re-evaporation in a dedicated dehumidifier/water heater
US-2018080660-A1 · Mar 22, 2018 · US
Heating device with condensing counter-flow heat exchanger and method of operating the same
US-9851109-B2 · Dec 26, 2017 · US
Bathroom air-conditioner
US-9746197-B2 · Aug 29, 2017 · US
Refrigeration cycle apparatus
US-9644876-B2 · May 9, 2017 · US
Heating device with condensing counter-flow heat exchanger
US-2016146473-A1 · May 26, 2016 · US
Heating device with condensing counter-flow heat exchanger
US-9273880-B2 · Mar 1, 2016 · US
Heating device with condensing counter-flow heat exchanger
US-2015047812-A1 · Feb 19, 2015 · US