- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 21/22 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
Patent holdings for IPC class H02K 21/22
Total number of patents in this class: 908
10-year publication summary
|
54
|
63
|
73
|
94
|
116
|
141
|
103
|
86
|
80
|
23
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denso Corporation | 23338 |
92 |
| Nidec Corporation | 2579 |
45 |
| LG Electronics Inc. | 69257 |
25 |
| LG Innotek Co., Ltd. | 6758 |
20 |
| Minebea Mitsumi Inc. | 1461 |
17 |
| Mitsubishi Electric Corporation | 43934 |
15 |
| Mitsuba Corporation | 806 |
15 |
| Robert Bosch GmbH | 40953 |
14 |
| Densotrim Co., Ltd. | 50 |
14 |
| NTN Corporation | 5008 |
13 |
| Valeo Systemes Thermiques | 2471 |
13 |
| Samsung Electronics Co., Ltd. | 131630 |
11 |
| Daikin Industries, Ltd. | 9495 |
11 |
| Whirlpool Corporation | 4238 |
10 |
| NSK Ltd. | 2719 |
10 |
| Johnson Electric International AG | 390 |
9 |
| Makita Corporation | 2339 |
8 |
| Evr Motors Ltd. | 17 |
8 |
| Siemens Gamesa Renewable Energy A/S | 1647 |
8 |
| Siemens AG | 24990 |
7 |
| Other owners | 543 |