- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 23/20 - DC commutator motors or generators having mechanical commutatorUniversal AC/DC commutator motors characterised by arrangement for exciting having additional brushes spaced intermediately of the main brushes on the commutator, e.g. cross-field machines, metadynes, amplidynes or other armature-reaction excited machines
Patent holdings for IPC class H02K 23/20
Total number of patents in this class: 15
10-year publication summary
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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 | 43751 |
5 |
| Mitsuba Corporation | 819 |
4 |
| Denso Corporation | 25303 |
1 |
| SPAL Automotive S.r.l. | 109 |
1 |
| Timotion Technology Co., Ltd. | 255 |
1 |
| Valeo Systemes d'Essuyage | 1160 |
1 |
| Robert Bosch Limitada | 126 |
1 |
| Toyota Jidosha Kabushiki Kaisha | 637 |
1 |
| Other owners | 0 |