- All sections
- H - Electricity
- H02K - Dynamo-electric machines
- H02K 9/12 - Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing wherein the cooling medium circulates freely within the casing
Patent holdings for IPC class H02K 9/12
Total number of patents in this class: 123
10-year publication summary
|
12
|
16
|
8
|
15
|
11
|
9
|
13
|
5
|
4
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24575 |
12 |
| Infinitum Electric Inc. | 72 |
10 |
| ABB Schweiz AG | 6609 |
5 |
| Audi AG | 7264 |
3 |
| Concepts Nrec, LLC | 57 |
3 |
| Magna International Inc. | 1258 |
3 |
| General Electric Company | 17801 |
2 |
| ZF Friedrichshafen AG | 7009 |
2 |
| Hamilton Sundstrand Corporation | 4712 |
2 |
| Siemens Energy, Inc. | 1737 |
2 |
| Baldor Electric Company | 59 |
2 |
| Beijing GoldWind Science & Creation Windpower Equipment Co., Ltd. | 354 |
2 |
| Doosan Heavy Industries & Construction Co., Ltd. | 585 |
2 |
| General Electric Technology GmbH | 1602 |
2 |
| Remy Technologies, LLC | 174 |
2 |
| Rolls-Royce Corporation | 1718 |
2 |
| ThyssenKrupp AG | 3207 |
2 |
| ThyssenKrupp Presta Teccenter AG | 241 |
2 |
| Trane International Inc. | 1147 |
2 |
| GE Renewable Technologies | 121 |
2 |
| Other owners | 59 |