- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F25B - Refrigeration machines, plants or systemscombined heating and refrigeration systemsheat pump systems
- F25B 41/31 - Expansion valves
Patent holdings for IPC class F25B 41/31
Total number of patents in this class: 566
10-year publication summary
|
0
|
9
|
20
|
32
|
71
|
94
|
81
|
95
|
75
|
54
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hanon Systems | 2109 |
42 |
| Mitsubishi Electric Corporation | 48097 |
39 |
| LG Electronics Inc. | 75845 |
36 |
| Samsung Electronics Co., Ltd. | 158156 |
30 |
| Hill Phoenix, Inc. | 306 |
17 |
| Daikin Industries, Ltd. | 10511 |
14 |
| Carrier Corporation | 3951 |
14 |
| Denso Corporation | 25607 |
12 |
| Booz Allen Hamilton Inc. | 332 |
12 |
| Zhejiang DunAn Artificial Environment Co., Ltd | 710 |
12 |
| Hyundai Motor Company | 24745 |
10 |
| Kia Corporation | 12477 |
10 |
| GREE Electric Appliances, Inc. of Zhuhai | 3318 |
9 |
| Midea Group Co., Ltd. | 5040 |
9 |
| Rheem Manufacturing Company | 1021 |
9 |
| Trane International Inc. | 1230 |
9 |
| GD Midea Air-Conditioning Equipment Co., Ltd. | 2094 |
8 |
| Zhejiang Sanhua Intelligent Controls Co., Ltd. | 229 |
8 |
| Ford Global Technologies, LLC | 21532 |
7 |
| Tyco Fire & Security GmbH | 3656 |
7 |
| Other owners | 252 |