- 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: 1414
10-year publication summary
|
4
|
11
|
47
|
100
|
173
|
221
|
220
|
248
|
189
|
99
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Electronics Inc. | 75818 |
93 |
| Mitsubishi Electric Corporation | 48048 |
75 |
| Daikin Industries, Ltd. | 10504 |
58 |
| Samsung Electronics Co., Ltd. | 157946 |
51 |
| Hanon Systems | 2108 |
46 |
| Heatcraft Refrigeration Products LLC | 282 |
45 |
| Carrier Corporation | 3951 |
44 |
| Haier Smart Home Co., Ltd. | 5716 |
37 |
| Tyco Fire & Security GmbH | 3652 |
34 |
| Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1922 |
26 |
| Qingdao Haier Air Conditioner General Corp.,ltd | 2429 |
24 |
| Denso Corporation | 25579 |
22 |
| Hill Phoenix, Inc. | 306 |
21 |
| Lennox Industries Inc. | 1107 |
21 |
| Trane International Inc. | 1229 |
21 |
| Energy Recovery, Inc. | 191 |
16 |
| GD Midea Heating & Ventilating Equipment Co., Ltd. | 765 |
16 |
| GREE Electric Appliances, Inc. of Zhuhai | 3317 |
16 |
| Valeo Systemes Thermiques | 2825 |
15 |
| Copeland LP | 705 |
15 |
| Other owners | 718 |