- 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: 174
10-year publication summary
|
8
|
7
|
13
|
14
|
13
|
8
|
10
|
9
|
9
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Flender GmbH | 380 |
12 |
| Siemens AG | 24386 |
11 |
| Mitsubishi Electric Corporation | 46449 |
10 |
| Bayerische Motoren Werke Aktiengesellschaft | 14476 |
8 |
| Piston Opw, Inc. | 78 |
8 |
| Belanger, Inc. | 140 |
7 |
| Valeo Equipements Electriques Moteur | 993 |
6 |
| Denso Corporation | 24480 |
5 |
| Black & Decker, Inc. | 2408 |
5 |
| Mersen France Amiens SAS | 37 |
5 |
| Mitsuba Corporation | 811 |
5 |
| Robert Bosch GmbH | 42824 |
4 |
| Audi AG | 7377 |
4 |
| Moog Inc. | 425 |
4 |
| Toyota Motor Corporation | 32869 |
3 |
| Schaeffler Technologies AG & Co. KG | 9995 |
3 |
| Makita Corporation | 2462 |
3 |
| General Electric Technology GmbH | 1373 |
3 |
| SEG Automotive Germany GmbH | 205 |
3 |
| Schunk Carbon Technology GmbH | 37 |
3 |
| Other owners | 62 |