- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24F - Air-conditioning; air-humidification; ventilation; use of air currents for screening
- F24F 11/43 - Defrosting; Preventing freezing of indoor units
Patent holdings for IPC class F24F 11/43
Total number of patents in this class: 148
10-year publication summary
|
0
|
0
|
1
|
16
|
34
|
12
|
13
|
11
|
12
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qingdao Haier Air Conditioner General Corp.,ltd | 2332 |
32 |
| Haier Smart Home Co., Ltd. | 5289 |
28 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1827 |
13 |
| Hitachi-johnson Controls Air Conditioning, Inc. | 494 |
10 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 1653 |
9 |
| Daikin Industries, Ltd. | 9766 |
7 |
| Lennox Industries Inc. | 1096 |
6 |
| Samsung Electronics Co., Ltd. | 138320 |
5 |
| Tyco Fire & Security GmbH | 3281 |
5 |
| Midea Group Co., Ltd. | 4277 |
4 |
| Mitsubishi Electric Corporation | 44678 |
3 |
| Carrier Corporation | 4443 |
3 |
| GREE Electric Appliances, Inc. of Zhuhai | 3146 |
3 |
| LG Electronics Inc. | 70831 |
2 |
| Heatcraft Refrigeration Products LLC | 251 |
2 |
| Hitachi, Ltd. | 15177 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 29567 |
1 |
| Siemens Industry, Inc. | 1425 |
1 |
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 543 |
1 |
| Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd. | 180 |
1 |
| Other owners | 11 |