- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 27/12 - Oil cooling
Patent holdings for IPC class H01F 27/12
Total number of patents in this class: 312
10-year publication summary
|
21
|
23
|
27
|
41
|
39
|
27
|
39
|
25
|
24
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Energy Ltd. | 1921 |
30 |
| Mitsubishi Electric Corporation | 43934 |
26 |
| ABB Schweiz AG | 6321 |
18 |
| Siemens AG | 24990 |
17 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
11 |
| Ford Global Technologies, LLC | 19702 |
10 |
| Cargill, Incorporated | 2835 |
8 |
| Hitachi Energy Switzerland AG | 327 |
8 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
7 |
| ABB Power Grids Switzerland AG | 227 |
7 |
| Hitachi, Ltd. | 16452 |
6 |
| ABB Technology AG | 1301 |
5 |
| Maschinenfabrik Reinhausen GmbH | 749 |
5 |
| Qualitrol Company, LLC | 57 |
4 |
| Hyundai Electric & Energy Systems Co., Ltd | 52 |
4 |
| Dow Global Technologies LLC | 10147 |
3 |
| Arkema France | 3790 |
3 |
| Biosynthetic Technologies, LLC | 92 |
3 |
| General Electric Technology GmbH | 1657 |
3 |
| Lsis Co., Ltd. | 834 |
3 |
| Other owners | 131 |