- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24F - Air-conditioning; air-humidification; ventilation; use of air currents for screening
- F24F 11/84 - Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
Patent holdings for IPC class F24F 11/84
Total number of patents in this class: 776
10-year publication summary
|
6
|
20
|
21
|
53
|
85
|
106
|
95
|
77
|
121
|
30
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Haier Smart Home Co., Ltd. | 4882 |
80 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1721 |
73 |
| Qingdao Haier Air Conditioner General Corp.,ltd | 2228 |
62 |
| Mitsubishi Electric Corporation | 43934 |
60 |
| Daikin Industries, Ltd. | 9495 |
36 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 1475 |
35 |
| Midea Group Co., Ltd. | 4025 |
27 |
| LG Electronics Inc. | 69257 |
21 |
| Lennox Industries Inc. | 1088 |
21 |
| Johnson Controls Tyco IP Holdings LLP | 1584 |
21 |
| Belimo Holding AG | 235 |
20 |
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 428 |
20 |
| Tyco Fire & Security GmbH | 2172 |
17 |
| Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd. | 134 |
16 |
| Johnson Controls Technology Company | 1522 |
15 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
15 |
| Samsung Electronics Co., Ltd. | 131630 |
14 |
| Carrier Corporation | 4759 |
14 |
| Hefei Midea Heating & Ventilating Equipment Co., Ltd. | 143 |
9 |
| Hitachi-johnson Controls Air Conditioning, Inc. | 499 |
8 |
| Other owners | 192 |