- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F25B - Refrigeration machines, plants or systems; combined heating and refrigeration systems; heat pump systems
- F25B 41/20 - Disposition of valves, e.g. of on-off valves or flow control valves
Patent holdings for IPC class F25B 41/20
Total number of patents in this class: 900
10-year publication summary
|
1
|
4
|
4
|
11
|
47
|
98
|
169
|
210
|
205
|
81
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 69257 |
62 |
| Mitsubishi Electric Corporation | 43934 |
61 |
| Daikin Industries, Ltd. | 9495 |
45 |
| Carrier Corporation | 4759 |
32 |
| Samsung Electronics Co., Ltd. | 131630 |
31 |
| Haier Smart Home Co., Ltd. | 4882 |
31 |
| Heatcraft Refrigeration Products LLC | 246 |
29 |
| Johnson Controls Tyco IP Holdings LLP | 1584 |
24 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1721 |
23 |
| Qingdao Haier Air Conditioner General Corp.,ltd | 2228 |
20 |
| Denso Corporation | 23338 |
17 |
| Hanon Systems | 1632 |
16 |
| Lennox Industries Inc. | 1088 |
16 |
| Valeo Systemes Thermiques | 2471 |
14 |
| Booz Allen Hamilton Inc. | 229 |
13 |
| Trane International Inc. | 1123 |
12 |
| GREE Electric Appliances, Inc. of Zhuhai | 3007 |
11 |
| Hill Phoenix, Inc. | 235 |
11 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 394 |
10 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 1475 |
8 |
| Other owners | 414 |