- 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: 3004
10-year publication summary
|
236
|
260
|
272
|
338
|
280
|
325
|
308
|
277
|
253
|
214
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dyson Technology Limited | 3673 |
120 |
| LG Electronics Inc. | 73578 |
100 |
| Hunter Fan Company | 781 |
96 |
| Delta T, LLC | 286 |
77 |
| Panasonic Intellectual Property Management Co., Ltd. | 31882 |
63 |
| Midea Group Co., Ltd. | 4603 |
58 |
| Mitsubishi Electric Corporation | 46449 |
51 |
| Valeo Systemes Thermiques | 2737 |
51 |
| GD Midea Environment Appliances MFG Co., Ltd. | 213 |
40 |
| Panasonic Corporation | 20042 |
39 |
| Shenzhen Jisu Technology Co., Ltd. | 115 |
38 |
| Delta Electronics, Inc. | 2648 |
36 |
| Opple Lighting Co., Ltd. | 834 |
36 |
| ebm-papst Mulfingen GmbH & Co. KG | 613 |
33 |
| Suzhou Opple Lighting Co., Ltd. | 614 |
32 |
| GREE Electric Appliances, Inc. of Zhuhai | 3251 |
29 |
| Hamilton Sundstrand Corporation | 4916 |
28 |
| Makita Corporation | 2462 |
28 |
| Air Cool Industrial Co., Ltd. | 270 |
28 |
| Regal Beloit America, Inc. | 869 |
28 |
| Other owners | 1993 |