- 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: 3278
10-year publication summary
|
271
|
283
|
366
|
290
|
336
|
316
|
287
|
266
|
295
|
242
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dyson Technology Limited | 4028 |
121 |
| LG Electronics Inc. | 75973 |
104 |
| Hunter Fan Company | 910 |
101 |
| Delta T, LLC | 279 |
78 |
| Panasonic Intellectual Property Management Co., Ltd. | 34403 |
65 |
| Shenzhen Jisu Technology Co., Ltd. | 169 |
62 |
| Midea Group Co., Ltd. | 5070 |
61 |
| Valeo Systemes Thermiques | 2821 |
53 |
| Mitsubishi Electric Corporation | 48287 |
52 |
| GD Midea Environment Appliances MFG Co., Ltd. | 239 |
43 |
| Opple Lighting Co., Ltd. | 927 |
40 |
| Delta Electronics, Inc. | 2853 |
39 |
| Panasonic Corporation | 18751 |
37 |
| Suzhou Opple Lighting Co., Ltd. | 691 |
37 |
| ebm-papst Mulfingen GmbH & Co. KG | 497 |
34 |
| Nidec Corporation | 2828 |
31 |
| Makita Corporation | 2580 |
30 |
| GREE Electric Appliances, Inc. of Zhuhai | 3320 |
30 |
| Hamilton Sundstrand Corporation | 5013 |
29 |
| Air Cool Industrial Co., Ltd. | 299 |
29 |
| Other owners | 2202 |