- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24F - Air-conditioning; air-humidification; ventilation; use of air currents for screening
- F24F 140/20 - Heat-exchange fluid temperature
Patent holdings for IPC class F24F 140/20
Total number of patents in this class: 553
10-year publication summary
|
8
|
12
|
21
|
50
|
69
|
70
|
61
|
53
|
63
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Haier Smart Home Co., Ltd. | 5289 |
65 |
| Mitsubishi Electric Corporation | 44678 |
63 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1827 |
62 |
| Qingdao Haier Air Conditioner General Corp.,ltd | 2332 |
59 |
| Daikin Industries, Ltd. | 9766 |
28 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 1653 |
26 |
| Tyco Fire & Security GmbH | 3281 |
17 |
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 543 |
16 |
| Lennox Industries Inc. | 1096 |
16 |
| Midea Group Co., Ltd. | 4277 |
16 |
| Belimo Holding AG | 256 |
15 |
| Samsung Electronics Co., Ltd. | 138320 |
13 |
| LG Electronics Inc. | 70831 |
12 |
| GREE Electric Appliances, Inc. of Zhuhai | 3146 |
10 |
| Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd. | 180 |
10 |
| Fujitsu General Limited | 579 |
8 |
| Mitsubishi Heavy Industries Thermal Systems, Ltd. | 835 |
7 |
| Carrier Corporation | 4443 |
5 |
| Hitachi-johnson Controls Air Conditioning, Inc. | 494 |
5 |
| Panasonic Intellectual Property Management Co., Ltd. | 29567 |
4 |
| Other owners | 96 |