- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 27/04 - Leading of conductors or axles through casings, e.g. for tap-changing arrangements
Patent holdings for IPC class H01F 27/04
Total number of patents in this class: 267
10-year publication summary
|
24
|
26
|
32
|
28
|
25
|
23
|
14
|
11
|
13
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 24568 |
39 |
| Hitachi Energy Ltd. | 2241 |
25 |
| HSP Hochspannungsgeräte GmbH | 132 |
12 |
| Siemens Energy Global GmbH & Co. KG | 2849 |
12 |
| ABB Schweiz AG | 6650 |
8 |
| ABB Power Grids Switzerland AG | 212 |
8 |
| Cisco Technology, Inc. | 19411 |
6 |
| ABB Technology Ltd | 482 |
6 |
| Hitachi Energy Switzerland AG | 307 |
6 |
| Denso Corporation | 23823 |
4 |
| Murata Manufacturing Co., Ltd. | 23784 |
4 |
| Coilcraft, Incorporated | 30 |
4 |
| FANUC Corporation | 6378 |
4 |
| General Electric Technology GmbH | 1599 |
4 |
| LG Electronics Inc. | 71185 |
3 |
| Mitsubishi Electric Corporation | 44962 |
3 |
| Hubbell Incorporated | 3168 |
3 |
| ABB Technology AG | 1269 |
3 |
| ABB Research Ltd. | 912 |
3 |
| Shanghai United Imaging Healthcare Co., Ltd. | 1770 |
3 |
| Other owners | 107 |