- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 30/12 - Two-phase, three-phase or polyphase transformers
Patent holdings for IPC class H01F 30/12
Total number of patents in this class: 343
10-year publication summary
|
24
|
33
|
31
|
35
|
30
|
26
|
25
|
22
|
17
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Energy Ltd. | 2232 |
26 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1402 |
21 |
| FANUC Corporation | 6326 |
16 |
| ABB Technology AG | 1272 |
14 |
| The Boeing Company | 19909 |
9 |
| Hamilton Sundstrand Corporation | 4724 |
8 |
| Haihong Electric Co., Ltd. | 41 |
8 |
| Safran Electrical & Power | 614 |
8 |
| ABB Schweiz AG | 6624 |
6 |
| Siemens Energy Global GmbH & Co. KG | 2828 |
6 |
| Siemens AG | 24573 |
5 |
| Hitachi, Ltd. | 15220 |
5 |
| Delta Electronics (Shanghai) Co., Ltd. | 659 |
5 |
| Hitachi Energy Switzerland AG | 308 |
5 |
| Valeo Eautomotive France SAS | 39 |
5 |
| Sumitomo Electric Industries, Ltd. | 14956 |
4 |
| Tokuden Co., Ltd. | 38 |
4 |
| Ionate Limited | 7 |
4 |
| Proterial, Ltd. | 761 |
4 |
| Enoda Ltd. | 18 |
4 |
| Other owners | 176 |