- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24F - Air-conditioning; air-humidification; ventilation; use of air currents for screening
- F24F 11/74 - Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
Patent holdings for IPC class F24F 11/74
Total number of patents in this class: 1068
10-year publication summary
|
10
|
26
|
61
|
124
|
166
|
151
|
145
|
146
|
115
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 44851 |
115 |
| Daikin Industries, Ltd. | 9838 |
77 |
| Panasonic Intellectual Property Management Co., Ltd. | 29733 |
73 |
| Haier Smart Home Co., Ltd. | 5310 |
70 |
| Qingdao Haier Air Conditioner General Corp.,ltd | 2340 |
67 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1835 |
57 |
| Tyco Fire & Security GmbH | 3297 |
55 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 1661 |
22 |
| Lennox Industries Inc. | 1099 |
20 |
| Midea Group Co., Ltd. | 4300 |
18 |
| Samsung Electronics Co., Ltd. | 139001 |
17 |
| LG Electronics Inc. | 71039 |
13 |
| Siemens Industry, Inc. | 1430 |
13 |
| Trane International Inc. | 1153 |
11 |
| Carrier Corporation | 4451 |
10 |
| Rheem Manufacturing Company | 922 |
10 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 840 |
10 |
| GREE Electric Appliances, Inc. of Zhuhai | 3154 |
9 |
| Air Distribution Technologies IP, LLC | 155 |
8 |
| Sharp Kabushiki Kaisha | 18867 |
8 |
| Other owners | 385 |