- 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: 2954
10-year publication summary
|
259
|
271
|
283
|
366
|
290
|
336
|
314
|
284
|
253
|
173
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dyson Technology Limited | 3643 |
120 |
| LG Electronics Inc. | 72962 |
100 |
| Hunter Fan Company | 764 |
91 |
| Delta T, LLC | 286 |
74 |
| Panasonic Intellectual Property Management Co., Ltd. | 31330 |
62 |
| Midea Group Co., Ltd. | 4542 |
58 |
| Mitsubishi Electric Corporation | 46037 |
51 |
| Valeo Systemes Thermiques | 2730 |
51 |
| GD Midea Environment Appliances MFG Co., Ltd. | 211 |
40 |
| Panasonic Corporation | 20124 |
39 |
| Shenzhen Jisu Technology Co., Ltd. | 110 |
36 |
| Delta Electronics, Inc. | 2606 |
34 |
| Opple Lighting Co., Ltd. | 812 |
34 |
| ebm-papst Mulfingen GmbH & Co. KG | 610 |
32 |
| Suzhou Opple Lighting Co., Ltd. | 592 |
30 |
| GREE Electric Appliances, Inc. of Zhuhai | 3242 |
29 |
| Hamilton Sundstrand Corporation | 4865 |
28 |
| Regal Beloit America, Inc. | 867 |
28 |
| Makita Corporation | 2451 |
27 |
| Air Cool Industrial Co., Ltd. | 268 |
27 |
| Other owners | 1963 |