- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 21/20 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar machine
Patent holdings for IPC class H02K 21/20
Total number of patents in this class: 34
10-year publication summary
|
1
|
3
|
1
|
3
|
5
|
3
|
4
|
7
|
5
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 40953 |
3 |
| Toshiba Corporation | 12017 |
2 |
| Unison Industries, LLC | 195 |
2 |
| LG Electronics Inc. | 69257 |
1 |
| Hyundai Motor Company | 19021 |
1 |
| Massachusetts Institute of Technology | 9795 |
1 |
| Rolls-Royce PLC | 2944 |
1 |
| Kia Motors Corporation | 7946 |
1 |
| Shimadzu Corporation | 5791 |
1 |
| Toyota Industries Corporation | 1010 |
1 |
| Faulhaber Precistep SA | 6 |
1 |
| GKN Sinter Metals Engineering GmbH | 128 |
1 |
| Konishi Co., Ltd. | 22 |
1 |
| Kress Motors, LLC | 6 |
1 |
| Linear Labs, Inc. | 60 |
1 |
| Peugeot Citroen Automobiles SA | 1903 |
1 |
| Seiko Precision Inc. | 124 |
1 |
| Suteng Innovation Technology Co., Ltd | 307 |
1 |
| University of Utah Research Foundation | 1737 |
1 |
| Vastech Holdings Ltd. | 7 |
1 |
| Other owners | 10 |