- 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: 149
10-year publication summary
|
16
|
8
|
15
|
11
|
9
|
13
|
7
|
5
|
14
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Infinitum Electric Inc. | 91 |
13 |
| Siemens AG | 24020 |
12 |
| ABB Oy | 168 |
6 |
| ABB Schweiz AG | 7621 |
5 |
| Garrett Transportation I Inc. | 302 |
5 |
| Audi AG | 7561 |
4 |
| Concepts Nrec, LLC | 56 |
3 |
| Magna International Inc. | 1176 |
3 |
| Nuovo Pignone Tecnologie S.r.l. | 1219 |
3 |
| Innomotics GmbH | 598 |
3 |
| ZF Friedrichshafen AG | 7247 |
2 |
| Hamilton Sundstrand Corporation | 5014 |
2 |
| Siemens Energy, Inc. | 1684 |
2 |
| Baldor Electric Company | 47 |
2 |
| Beijing GoldWind Science & Creation Windpower Equipment Co., Ltd. | 390 |
2 |
| Doosan Heavy Industries & Construction Co., Ltd. | 580 |
2 |
| General Electric Technology GmbH | 1337 |
2 |
| Remy Technologies, LLC | 172 |
2 |
| Rolls-Royce Corporation | 1677 |
2 |
| ThyssenKrupp AG | 3399 |
2 |
| Other owners | 72 |