- 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: 208
10-year publication summary
|
17
|
20
|
17
|
16
|
15
|
14
|
18
|
22
|
15
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Energy Ltd. | 2227 |
15 |
| Hyosung Heavy Industries Corporation | 255 |
8 |
| Hitachi Energy Switzerland AG | 303 |
8 |
| Siemens AG | 24477 |
7 |
| Samsung Electro-mechanics Co., Ltd. | 5618 |
6 |
| Yazaki Corporation | 6692 |
6 |
| LS ELECTRIC Co., Ltd | 701 |
6 |
| Moda-innochips Co., Ltd. | 99 |
5 |
| Mitsubishi Electric Corporation | 46127 |
4 |
| FANUC Corporation | 6679 |
4 |
| Hyosung Corporation | 290 |
4 |
| Trench Limited | 18 |
4 |
| Wurth Elektronik eiSos GmbH & Co. KG | 116 |
4 |
| HSP Hochspannungsgeräte GmbH | 129 |
3 |
| JFE Steel Corporation | 6852 |
3 |
| Hyundai Electric & Energy Systems Co., Ltd | 52 |
3 |
| Siemens Energy Global GmbH & Co. KG | 2969 |
3 |
| Siemens Energy Global GmbH & Co. KG | 10 |
3 |
| Murata Manufacturing Co., Ltd. | 24542 |
2 |
| Analog Devices, Inc. | 3380 |
2 |
| Other owners | 108 |