- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 21/20 - Synchronous motors having permanent magnetsSynchronous 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: 38
10-year publication summary
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1
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3
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5
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3
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4
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7
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5
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3
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3
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4
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 43700 |
3 |
| LG Electronics Inc. | 75160 |
2 |
| Toshiba Corporation | 12694 |
2 |
| Rolls-Royce Deutschland Ltd & Co KG | 845 |
2 |
| Unison Industries, LLC | 213 |
2 |
| Hyundai Motor Company | 23968 |
1 |
| Massachusetts Institute of Technology | 10209 |
1 |
| Rolls-Royce PLC | 3181 |
1 |
| Kia Motors Corporation | 7720 |
1 |
| Shimadzu Corporation | 6310 |
1 |
| Toyota Industries Corporation | 1195 |
1 |
| Faulhaber Precistep SA | 5 |
1 |
| GKN Sinter Metals Engineering GmbH | 115 |
1 |
| Honeywell Federal Manufacturing & Technologies, LLC | 338 |
1 |
| Kress Motors, LLC | 6 |
1 |
| Linear Labs, Inc. | 75 |
1 |
| Peugeot Citroen Automobiles SA | 1686 |
1 |
| Seiko Precision Inc. | 103 |
1 |
| Suteng Innovation Technology Co., Ltd | 417 |
1 |
| University of Pittsburgh - Of the Commonwealth System of Higher Education | 3272 |
1 |
| Other owners | 12 |