- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 9/28 - Cooling of commutators, slip-rings or brushes, e.g. by ventilating
Patent holdings for IPC class H02K 9/28
Total number of patents in this class: 184
10-year publication summary
|
7
|
14
|
14
|
16
|
9
|
10
|
11
|
9
|
9
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Flender GmbH | 423 |
11 |
| Siemens AG | 23996 |
10 |
| Mitsubishi Electric Corporation | 48172 |
10 |
| Bayerische Motoren Werke Aktiengesellschaft | 15373 |
10 |
| Piston Opw, Inc. | 77 |
8 |
| Belanger, Inc. | 143 |
7 |
| Mersen France Amiens SAS | 40 |
6 |
| Valeo Equipements Electriques Moteur | 940 |
6 |
| Denso Corporation | 25645 |
5 |
| Black & Decker, Inc. | 2457 |
5 |
| Schaeffler Technologies AG & Co. KG | 11093 |
5 |
| ABB Oy | 167 |
5 |
| Mitsuba Corporation | 822 |
5 |
| Schunk Carbon Technology GmbH | 43 |
5 |
| Robert Bosch GmbH | 44254 |
4 |
| Audi AG | 7571 |
4 |
| Moog Inc. | 431 |
4 |
| Toyota Motor Corporation | 35927 |
3 |
| Makita Corporation | 2576 |
3 |
| General Electric Technology GmbH | 1336 |
3 |
| Other owners | 65 |