- 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: 335
10-year publication summary
|
22
|
24
|
33
|
31
|
35
|
30
|
26
|
25
|
21
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
21 |
| Hitachi Energy Ltd. | 1921 |
20 |
| FANUC Corporation | 5803 |
17 |
| ABB Technology AG | 1301 |
14 |
| The Boeing Company | 19843 |
8 |
| Hitachi, Ltd. | 16452 |
8 |
| Hamilton Sundstrand Corporation | 4525 |
8 |
| Haihong Electric Co., Ltd. | 37 |
8 |
| Safran Electrical & Power | 507 |
7 |
| ABB Schweiz AG | 6321 |
6 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
6 |
| Siemens AG | 24990 |
5 |
| Delta Electronics (Shanghai) Co., Ltd. | 611 |
5 |
| Howard Industries, Inc. | 14 |
5 |
| Hitachi Energy Switzerland AG | 327 |
5 |
| Sumitomo Electric Industries, Ltd. | 14131 |
4 |
| Tokuden Co., Ltd. | 38 |
4 |
| Intel Corporation | 45621 |
3 |
| Mitsubishi Electric Corporation | 43934 |
3 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
3 |
| Other owners | 175 |