- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F24F - Air-conditioning; air-humidification; ventilation; use of air currents for screening
- F24F 11/39 - Monitoring filter performance
Patent holdings for IPC class F24F 11/39
Total number of patents in this class: 354
10-year publication summary
2
|
10
|
15
|
30
|
40
|
53
|
46
|
50
|
56
|
17
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Qingdao Haier Air Conditioner General Corp.,ltd | 2228 |
32 |
Haier Smart Home Co., Ltd. | 4882 |
29 |
Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1721 |
24 |
3m Innovative Properties Company | 18406 |
23 |
Samsung Electronics Co., Ltd. | 131630 |
14 |
Mitsubishi Electric Corporation | 43934 |
11 |
Daikin Industries, Ltd. | 9495 |
10 |
LG Electronics Inc. | 69257 |
7 |
Air Distribution Technologies IP, LLC | 160 |
6 |
Versuni Holding B.V. | 817 |
6 |
Integrated Energy Services Corporation | 9 |
5 |
Johnson Controls Tyco IP Holdings LLP | 1584 |
5 |
Koninklijke Philips N.V. | 22975 |
4 |
Carrier Corporation | 4759 |
4 |
Siemens Industry, Inc. | 1417 |
4 |
Johnson Controls Technology Company | 1522 |
4 |
American Air Filter Company, Inc. | 175 |
4 |
Google LLC | 38759 |
4 |
Honeywell International Inc. | 13799 |
3 |
Delta Electronics, Inc. | 2401 |
3 |
Other owners | 152 |