- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- 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: 2478
10-year publication summary
|
148
|
211
|
256
|
270
|
281
|
363
|
284
|
320
|
292
|
109
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dyson Technology Limited | 2840 |
118 |
| LG Electronics Inc. | 67565 |
74 |
| Delta T, LLC | 246 |
62 |
| Hunter Fan Company | 665 |
59 |
| Panasonic Intellectual Property Management Co., Ltd. | 26851 |
52 |
| Midea Group Co., Ltd. | 3641 |
51 |
| Mitsubishi Electric Corporation | 41690 |
49 |
| Panasonic Corporation | 21749 |
40 |
| Valeo Systemes Thermiques | 2291 |
38 |
| GD Midea Environment Appliances MFG Co., Ltd. | 167 |
35 |
| Delta Electronics, Inc. | 2329 |
32 |
| ebm-papst Mulfingen GmbH & Co. KG | 614 |
31 |
| Regal Beloit America, Inc. | 954 |
30 |
| Nidec Corporation | 2534 |
27 |
| Zhongshan Broad-Ocean Motor Co., Ltd. | 466 |
27 |
| Hamilton Sundstrand Corporation | 4265 |
24 |
| Airius IP Holdings, LLC | 59 |
23 |
| GREE Electric Appliances, Inc. of Zhuhai | 2810 |
23 |
| Makita Corporation | 2202 |
22 |
| Sunonwealth Electric Machine Industry Co., Ltd. | 201 |
20 |
| Other owners | 1641 |