- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24F - Air-conditioning; air-humidification; ventilation; use of air currents for screening
- F24F 11/81 - Control systems characterised by their outputs; Constructional 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: 124
10-year publication summary
|
4
|
3
|
4
|
11
|
20
|
20
|
20
|
12
|
22
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Lennox Industries Inc. | 1088 |
10 |
| Johnson Controls Tyco IP Holdings LLP | 1584 |
10 |
| Daikin Industries, Ltd. | 9495 |
9 |
| Qingdao Haier Air Conditioner General Corp.,ltd | 2228 |
9 |
| Mitsubishi Electric Corporation | 43934 |
8 |
| Haier Smart Home Co., Ltd. | 4882 |
8 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1721 |
8 |
| Samsung Electronics Co., Ltd. | 131630 |
5 |
| Carrier Corporation | 4759 |
5 |
| Energy Environmental Corporation | 13 |
3 |
| Midea Group Co., Ltd. | 4025 |
3 |
| Nortek Air Solutions Canada, Inc. | 114 |
3 |
| Rheem Manufacturing Company | 861 |
3 |
| Delta Electronics, Inc. | 2401 |
2 |
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 428 |
2 |
| Haier US Appliance Solutions, Inc. | 3178 |
2 |
| Intelligent Growth Solutions Limited | 24 |
2 |
| Munters Europe AB | 31 |
2 |
| WaterFurnace International, Inc. | 98 |
2 |
| LG Electronics Inc. | 69257 |
1 |
| Other owners | 27 |