- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 21/44 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with rotating flux distributors, and armatures and magnets both stationary with armature windings wound upon the magnets
Patent holdings for IPC class H02K 21/44
Total number of patents in this class: 105
10-year publication summary
|
16
|
11
|
14
|
7
|
7
|
9
|
6
|
6
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Persimmon Technologies, Corp. | 149 |
5 |
| Siemens AG | 24565 |
4 |
| Daikin Industries, Ltd. | 9838 |
4 |
| Prototus, Ltd. | 13 |
4 |
| Wisconsin Alumni Research Foundation | 3820 |
3 |
| Hamilton Sundstrand Corporation | 4728 |
3 |
| Aktiebolaget SKF | 2839 |
3 |
| Magnomatics Limited | 59 |
3 |
| Massachusetts Development Finance Agency | 33 |
3 |
| Nagoya Institute of Technology | 218 |
3 |
| Salem Saqr Majed Bin Saqr Almarri | 3 |
3 |
| Saqr Majed Bin Saqr Al Marri | 3 |
3 |
| General Electric Company | 17789 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8538 |
2 |
| Massachusetts Institute of Technology | 9913 |
2 |
| Levitronix GmbH | 57 |
2 |
| QM Power, Inc. | 57 |
2 |
| Rensselaer Polytechnic Institute | 804 |
2 |
| Technische Universitat Berlin | 354 |
2 |
| U.S. Department of Energy | 233 |
2 |
| Other owners | 48 |