- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F04D - Non-positive-displacement pumps
- F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
Patent holdings for IPC class F04D 25/08
Total number of patents in this class: 2881
10-year publication summary
|
259
|
271
|
283
|
366
|
290
|
336
|
313
|
280
|
252
|
112
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dyson Technology Limited | 3573 |
117 |
| LG Electronics Inc. | 72247 |
100 |
| Hunter Fan Company | 755 |
89 |
| Delta T, LLC | 286 |
74 |
| Panasonic Intellectual Property Management Co., Ltd. | 30822 |
62 |
| Midea Group Co., Ltd. | 4456 |
57 |
| Mitsubishi Electric Corporation | 45693 |
51 |
| Valeo Systemes Thermiques | 2685 |
45 |
| Panasonic Corporation | 20188 |
39 |
| GD Midea Environment Appliances MFG Co., Ltd. | 203 |
38 |
| Shenzhen Jisu Technology Co., Ltd. | 101 |
35 |
| Delta Electronics, Inc. | 2578 |
34 |
| ebm-papst Mulfingen GmbH & Co. KG | 609 |
31 |
| Opple Lighting Co., Ltd. | 786 |
30 |
| Hamilton Sundstrand Corporation | 4824 |
28 |
| GREE Electric Appliances, Inc. of Zhuhai | 3209 |
28 |
| Regal Beloit America, Inc. | 905 |
28 |
| Makita Corporation | 2456 |
27 |
| Air Cool Industrial Co., Ltd. | 261 |
27 |
| Nidec Corporation | 2636 |
27 |
| Other owners | 1914 |