- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F25B - Refrigeration machines, plants or systems; combined heating and refrigeration systems; heat pump systems
- F25B 41/31 - Expansion valves
Patent holdings for IPC class F25B 41/31
Total number of patents in this class: 345
10-year publication summary
0
|
0
|
0
|
9
|
20
|
32
|
70
|
93
|
78
|
26
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Mitsubishi Electric Corporation | 43934 |
24 |
Samsung Electronics Co., Ltd. | 131630 |
14 |
Hanon Systems | 1632 |
14 |
Hill Phoenix, Inc. | 235 |
14 |
LG Electronics Inc. | 69257 |
13 |
Daikin Industries, Ltd. | 9495 |
13 |
Carrier Corporation | 4759 |
12 |
Booz Allen Hamilton Inc. | 229 |
12 |
Johnson Controls Tyco IP Holdings LLP | 1584 |
9 |
Midea Group Co., Ltd. | 4025 |
7 |
Zhejiang Sanhua Intelligent Controls Co., Ltd. | 185 |
7 |
Haier Smart Home Co., Ltd. | 4882 |
7 |
Denso Corporation | 23338 |
6 |
Trane International Inc. | 1123 |
6 |
Exa Energy Technology (Shenzhen) Co., Ltd. | 16 |
6 |
Fujikoki Corporation | 330 |
5 |
GREE Electric Appliances, Inc. of Zhuhai | 3007 |
5 |
Qingdao Haier Air Conditioner General Corp.,ltd | 2228 |
5 |
Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1721 |
5 |
GD Midea Air-Conditioning Equipment Co., Ltd. | 1475 |
4 |
Other owners | 157 |