Air conditioning system
US-2022390136-A1 · Dec 8, 2022 · US
characterised by introduction of outside air to the room
characterised by introduction of outside air to the room · 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 | F24F1/0035 |
| Official title | characterised by introduction of outside air to the room |
| Display label | characterised by introduction of outside air to the room |
| Total patents | 124 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 6 |
| 2017 | 6 |
| 2018 | 5 |
| 2019 | 8 |
| 2020 | 6 |
| 2021 | 18 |
| 2022 | 13 |
| 2023 | 21 |
| 2024 | 21 |
| 2025 | 13 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air conditioner indoor unit and air conditioner
US-11466891-B2 · Oct 11, 2022 · US
Air conditioner
US-11441790-B2 · Sep 13, 2022 · US
Window air conditioner
US-2022275950-A1 · Sep 1, 2022 · US
Sealing mechanism, ventilation assembly and air-conditioning apparatus
US-2022235963-A1 · Jul 28, 2022 · US
Air conditioner
US-2022186972-A1 · Jun 16, 2022 · US
Multi-air conditioner for heating, cooling, and ventilation
US-2022090816-A1 · Mar 24, 2022 · US
Systems and methods for detecting and responding to refrigerant leaks in heating, ventilating, and air conditioning systems
US-2021396413-A1 · Dec 23, 2021 · US
Equipment fault detection, diagnostics and disaggregation system
US-11205027-B2 · Dec 21, 2021 · US
Air conditioning indoor unit, and air conditioner
US-2021389019-A1 · Dec 16, 2021 · US
Air conditioner
US-11149982-B2 · Oct 19, 2021 · US
Air duct device and air handling apparatus
US-2021318005-A1 · Oct 14, 2021 · US
Ventilation and air conditioning system and method for regulating air opening
US-2021318009-A1 · Oct 14, 2021 · US
Air duct device and air handling apparatus
US-2021318006-A1 · Oct 14, 2021 · US
Method and apparatus for reduction of condensate re-evaporation during cooling part-load duty cycling
US-11137152-B2 · Oct 5, 2021 · US
Economizer target temperature shift during mechanical cooling
US-11067297-B2 · Jul 20, 2021 · US
Systems and methods for detecting and responding to refrigerant leaks in heating, ventilating, and air conditioning systems
US-11060746-B2 · Jul 13, 2021 · US
Air conditioner and pipe installation apparatus therefor
US-2021156576-A1 · May 27, 2021 · US
Hvac systems with evaporator bypass and supply air recirculation and methods of using same
US-2021140673-A1 · May 13, 2021 · US
Ventilation apparatus and air conditioner including the same
US-2021140658-A1 · May 13, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24F1/0035?
- CPC F24F1/0035 is the Cooperative Patent Classification code for “characterised by introduction of outside air to the room.”
- How many patents are filed under CPC F24F1/0035 (characterised by introduction of outside air to the room)?
- Our database includes 124 publications tagged with this CPC code.
- Is patent activity under CPC F24F1/0035 growing?
- Publication counts under this code: 21 in 2024 vs 13 in 2025 (latest complete years).