- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 21/04 - Windings on magnets for additional excitation
Patent holdings for IPC class H02K 21/04
Total number of patents in this class: 271
10-year publication summary
|
10
|
25
|
17
|
27
|
37
|
22
|
23
|
18
|
10
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denso Corporation | 23338 |
28 |
| Valeo Equipements Electriques Moteur | 1036 |
24 |
| Robert Bosch GmbH | 40953 |
15 |
| Mitsubishi Electric Corporation | 43934 |
12 |
| Hamilton Sundstrand Corporation | 4525 |
11 |
| Siemens AG | 24990 |
10 |
| Daikin Industries, Ltd. | 9495 |
10 |
| Nagoya Institute of Technology | 198 |
9 |
| Milwaukee Electric Tool Corporation | 3572 |
6 |
| Aisin AW Co., Ltd. | 2430 |
4 |
| Purdue Research Foundation | 3277 |
4 |
| Exedy Corporation | 488 |
4 |
| Rapid Power Industries | 5 |
4 |
| Phinia Technologies Inc. | 83 |
4 |
| Toshiba Corporation | 12017 |
3 |
| Schaeffler Technologies AG & Co. KG | 8880 |
3 |
| ABB Schweiz AG | 6321 |
3 |
| Kura Laboratory Corporation | 5 |
3 |
| Magnomatics Limited | 54 |
3 |
| Systems, Machines, Automation Components Corporation | 23 |
3 |
| Other owners | 108 |