- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Patent holdings for IPC class H02K 9/19
Total number of patents in this class: 4060
10-year publication summary
|
158
|
225
|
351
|
321
|
337
|
388
|
417
|
430
|
410
|
254
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nidec Corporation | 2818 |
182 |
| Schaeffler Technologies AG & Co. KG | 11044 |
160 |
| Toyota Motor Corporation | 35857 |
97 |
| Honda Motor Co., Ltd. | 26064 |
89 |
| ZF Friedrichshafen AG | 7256 |
87 |
| Robert Bosch GmbH | 44209 |
80 |
| Mitsubishi Electric Corporation | 48097 |
71 |
| Denso Corporation | 25607 |
65 |
| Aisin Corporation | 1932 |
64 |
| Bayerische Motoren Werke Aktiengesellschaft | 15318 |
60 |
| Siemens AG | 24011 |
59 |
| Aisin AW Co., Ltd. | 2252 |
56 |
| Hamilton Sundstrand Corporation | 5013 |
56 |
| BorgWarner Inc. | 2584 |
52 |
| Huawei Digital Power Technologies Co. Ltd. | 2553 |
49 |
| Nissan Motor Co., Ltd. | 12980 |
48 |
| MAHLE International GmbH | 2918 |
47 |
| Meidensha Corporation | 930 |
42 |
| Hitachi Astemo, Ltd. | 6411 |
42 |
| GM Global Technology Operations LLC | 16170 |
41 |
| Other owners | 2613 |