- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F24F - Air-conditioningair-humidificationventilationuse of air currents for screening
- F24F 11/77 - Control systems characterised by their outputsConstructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
Patent holdings for IPC class F24F 11/77
Total number of patents in this class: 1487
10-year publication summary
|
70
|
76
|
99
|
134
|
157
|
159
|
173
|
125
|
110
|
50
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Qingdao Haier Air Conditioner General Corp.,ltd | 2428 |
164 |
| Haier Smart Home Co., Ltd. | 5707 |
161 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1921 |
124 |
| Daikin Industries, Ltd. | 10478 |
68 |
| Mitsubishi Electric Corporation | 47971 |
67 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 2087 |
64 |
| Samsung Electronics Co., Ltd. | 157557 |
62 |
| Lennox Industries Inc. | 1105 |
42 |
| Midea Group Co., Ltd. | 4979 |
41 |
| Panasonic Intellectual Property Management Co., Ltd. | 33911 |
34 |
| Tyco Fire & Security GmbH | 3631 |
27 |
| LG Electronics Inc. | 75654 |
23 |
| GREE Electric Appliances, Inc. of Zhuhai | 3316 |
22 |
| Carrier Corporation | 3958 |
21 |
| Delta T, LLC | 280 |
18 |
| Siemens Industry, Inc. | 1587 |
15 |
| Trane International Inc. | 1227 |
15 |
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 765 |
14 |
| Johnson Controls Light Commercial IP GmbH | 372 |
14 |
| Regal Beloit America, Inc. | 850 |
13 |
| Other owners | 478 |