- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F25B - Refrigeration machines, plants or systemscombined heating and refrigeration systemsheat 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: 1404
10-year publication summary
|
4
|
11
|
47
|
100
|
173
|
221
|
220
|
248
|
188
|
90
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75654 |
93 |
| Mitsubishi Electric Corporation | 47971 |
75 |
| Daikin Industries, Ltd. | 10478 |
58 |
| Samsung Electronics Co., Ltd. | 157557 |
51 |
| Hanon Systems | 2106 |
46 |
| Carrier Corporation | 3958 |
44 |
| Heatcraft Refrigeration Products LLC | 275 |
44 |
| Haier Smart Home Co., Ltd. | 5707 |
37 |
| Tyco Fire & Security GmbH | 3631 |
32 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1921 |
26 |
| Qingdao Haier Air Conditioner General Corp.,ltd | 2428 |
24 |
| Denso Corporation | 25513 |
22 |
| Hill Phoenix, Inc. | 305 |
21 |
| Lennox Industries Inc. | 1105 |
21 |
| Trane International Inc. | 1227 |
21 |
| Energy Recovery, Inc. | 191 |
16 |
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 765 |
16 |
| GREE Electric Appliances, Inc. of Zhuhai | 3316 |
16 |
| Valeo Systemes Thermiques | 2825 |
15 |
| Copeland LP | 700 |
15 |
| Other owners | 711 |