H02K 21/32
Having horse-shoe magnets
Official title: having horse-shoe magnets (with homopolar co-operation H02K21/36)
H02K21/32 (Having horse-shoe magnets) appears on 4 US grants and 5 published applications in this corpus.
Search patents in H02K- Granted patents
- 4
- Published applications
- 5
- Assignees
- 1
- Inventors
- 9
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2015 | 0 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electromagnetic power transfer system5 May 2026US 12,620,845 B2
- Brushless motor-generator having a spherical stator and spherical windings with displaced poles31 Aug 2021US 11,108,311 B2
- Electric current generator/motor with dual stationary/rotating stators and rotor having horseshoe magnet/electromagnetic coils3 Jul 2018US 10,014,734 B2
- Levered loudspeakers15 Nov 2016US 9,497,549 B2Bose Corporation
Most cited
By later US patents
No patent in this class has been cited by a later US patent yet.