- 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: 972
10-year publication summary
|
4
|
10
|
26
|
61
|
124
|
166
|
149
|
142
|
145
|
47
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Electric Corporation | 43934 |
104 |
| Daikin Industries, Ltd. | 9495 |
72 |
| Haier Smart Home Co., Ltd. | 4882 |
64 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
63 |
| Qingdao Haier Air Conditioner General Corp.,ltd | 2228 |
61 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1721 |
51 |
| Tyco Fire & Security GmbH | 2172 |
28 |
| Johnson Controls Tyco IP Holdings LLP | 1584 |
26 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 1475 |
20 |
| Lennox Industries Inc. | 1088 |
19 |
| Midea Group Co., Ltd. | 4025 |
16 |
| Samsung Electronics Co., Ltd. | 131630 |
14 |
| LG Electronics Inc. | 69257 |
13 |
| Siemens Industry, Inc. | 1417 |
12 |
| Carrier Corporation | 4759 |
11 |
| Trane International Inc. | 1123 |
10 |
| Air Distribution Technologies IP, LLC | 160 |
9 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
9 |
| Rheem Manufacturing Company | 861 |
9 |
| Sharp Kabushiki Kaisha | 18957 |
8 |
| Other owners | 353 |