- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 27/33 - Arrangements for noise damping
Patent holdings for IPC class H01F 27/33
Total number of patents in this class: 240
10-year publication summary
|
20
|
17
|
16
|
15
|
14
|
18
|
22
|
16
|
18
|
21
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Energy Ltd. | 2642 |
28 |
| Hyosung Heavy Industries Corporation | 283 |
8 |
| Hitachi Energy Switzerland AG | 300 |
8 |
| Siemens AG | 23956 |
7 |
| Samsung Electro-mechanics Co., Ltd. | 6162 |
7 |
| LS ELECTRIC Co., Ltd | 879 |
7 |
| Yazaki Corporation | 7155 |
6 |
| Moda-innochips Co., Ltd. | 101 |
5 |
| Mitsubishi Electric Corporation | 48351 |
4 |
| FANUC Corporation | 7369 |
4 |
| Hyosung Corporation | 285 |
4 |
| Trench Limited | 18 |
4 |
| HSP Hochspannungsgeräte GmbH | 144 |
3 |
| JFE Steel Corporation | 7632 |
3 |
| Wurth Elektronik eiSos GmbH & Co. KG | 121 |
3 |
| Hyundai Electric & Energy Systems Co., Ltd | 51 |
3 |
| Siemens Energy Global GmbH & Co. KG | 3470 |
3 |
| Siemens Energy Global GmbH & Co. KG | 10 |
3 |
| Murata Manufacturing Co., Ltd. | 25917 |
2 |
| Analog Devices, Inc. | 3318 |
2 |
| Other owners | 126 |