- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 9/197 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
Patent holdings for IPC class H02K 9/197
Total number of patents in this class: 406
10-year publication summary
|
23
|
18
|
25
|
30
|
39
|
37
|
59
|
62
|
55
|
21
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24990 |
23 |
| Schaeffler Technologies AG & Co. KG | 8880 |
16 |
| Dr. Ing. h.c. F. Porsche Aktiengesellschaft | 2487 |
15 |
| MAHLE International GmbH | 2670 |
13 |
| Hamilton Sundstrand Corporation | 4525 |
10 |
| Audi AG | 7153 |
9 |
| ZF Friedrichshafen AG | 6820 |
8 |
| GE Aviation Systems LLC | 569 |
8 |
| Tesla, Inc. | 1519 |
8 |
| Flender GmbH | 338 |
8 |
| Robert Bosch GmbH | 40953 |
7 |
| Siemens Energy, Inc. | 1770 |
7 |
| Magna Powertrain GmbH & Co KG | 257 |
7 |
| Nidec Corporation | 2579 |
6 |
| Rolls-Royce Deutschland Ltd & Co KG | 765 |
6 |
| Honda Motor Co., Ltd. | 24537 |
5 |
| Denso Corporation | 23338 |
5 |
| Rolls-Royce PLC | 2944 |
5 |
| IHI Corporation | 3268 |
5 |
| Eaton Intelligent Power Limited | 6113 |
5 |
| Other owners | 230 |