- 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: 2672
10-year publication summary
211
|
259
|
271
|
283
|
366
|
289
|
331
|
305
|
268
|
83
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Dyson Technology Limited | 3124 |
108 |
LG Electronics Inc. | 69257 |
92 |
Hunter Fan Company | 699 |
77 |
Delta T, LLC | 272 |
70 |
Panasonic Intellectual Property Management Co., Ltd. | 27812 |
58 |
Midea Group Co., Ltd. | 4025 |
54 |
Mitsubishi Electric Corporation | 43934 |
49 |
Valeo Systemes Thermiques | 2471 |
42 |
Panasonic Corporation | 20786 |
40 |
GD Midea Environment Appliances MFG Co., Ltd. | 177 |
37 |
Delta Electronics, Inc. | 2401 |
31 |
ebm-papst Mulfingen GmbH & Co. KG | 608 |
31 |
Regal Beloit America, Inc. | 939 |
29 |
Opple Lighting Co., Ltd. | 698 |
28 |
Zhongshan Broad-Ocean Motor Co., Ltd. | 499 |
27 |
Hamilton Sundstrand Corporation | 4525 |
26 |
Airius IP Holdings, LLC | 62 |
26 |
GREE Electric Appliances, Inc. of Zhuhai | 3007 |
26 |
Makita Corporation | 2339 |
25 |
Nidec Corporation | 2579 |
25 |
Other owners | 1771 |