- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F25B - Refrigeration machines, plants or systems; combined heating and refrigeration systems; heat pump systems
- F25B 41/34 - Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
Patent holdings for IPC class F25B 41/34
Total number of patents in this class: 132
10-year publication summary
0
|
0
|
0
|
1
|
5
|
20
|
17
|
25
|
35
|
9
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Zhejiang DunAn Artificial Environment Co., Ltd | 394 |
13 |
Haier Smart Home Co., Ltd. | 4882 |
8 |
Qingdao Haier Air-Conditioning Electronic Co., Ltd. | 1721 |
8 |
Carrier Corporation | 4759 |
7 |
LG Electronics Inc. | 69257 |
6 |
Denso Corporation | 23338 |
6 |
Qingdao Haier Air Conditioner General Corp.,ltd | 2228 |
6 |
Mitsubishi Electric Corporation | 43934 |
4 |
Haier US Appliance Solutions, Inc. | 3178 |
4 |
Hill Phoenix, Inc. | 235 |
4 |
Lennox Industries Inc. | 1088 |
4 |
Parker-Hannifin Corporation | 999 |
3 |
Zhejiang Sanhua Automotive Components Co., Ltd. | 230 |
3 |
Daikin Industries, Ltd. | 9495 |
2 |
GD Midea Air-Conditioning Equipment Co., Ltd. | 1475 |
2 |
GREE Electric Appliances, Inc. of Zhuhai | 3007 |
2 |
Guangdong Meizhi Compressor Co., Ltd. | 157 |
2 |
Qingdao Hisense Hitachi Air-Conditioning Systems Co., Ltd. | 134 |
2 |
Rheem Manufacturing Company | 861 |
2 |
STULZ Air Technology Systems, Inc. | 13 |
2 |
Other owners | 42 |