- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F24F - Air-conditioningair-humidificationventilationuse of air currents for screening
- F24F 11/81 - Control systems characterised by their outputsConstructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
Patent holdings for IPC class F24F 11/81
Total number of patents in this class: 158
10-year publication summary
|
4
|
11
|
20
|
20
|
21
|
13
|
24
|
9
|
23
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 48097 |
11 |
| Daikin Industries, Ltd. | 10511 |
10 |
| Qingdao Haier Air Conditioner General Corp.,ltd | 2429 |
9 |
| Tyco Fire & Security GmbH | 3656 |
9 |
| Samsung Electronics Co., Ltd. | 158156 |
8 |
| Lennox Industries Inc. | 1107 |
8 |
| Haier Smart Home Co., Ltd. | 5717 |
8 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1922 |
8 |
| Carrier Corporation | 3951 |
6 |
| Midea Group Co., Ltd. | 5040 |
6 |
| Johnson Controls Technology Company | 1384 |
5 |
| Energy Environmental Corporation | 14 |
3 |
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 766 |
3 |
| Nortek Air Solutions Canada, Inc. | 125 |
3 |
| Rheem Manufacturing Company | 1021 |
3 |
| WaterFurnace International, Inc. | 105 |
3 |
| Johnson Controls Light Commercial IP GmbH | 372 |
3 |
| LG Electronics Inc. | 75845 |
2 |
| Alarm.com Incorporated | 1014 |
2 |
| Haier US Appliance Solutions, Inc. | 4067 |
2 |
| Other owners | 46 |