- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection 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: 187
10-year publication summary
17
|
17
|
20
|
17
|
16
|
15
|
14
|
18
|
21
|
5
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Hyosung Heavy Industries Corporation | 234 |
8 |
Hitachi Energy Switzerland AG | 327 |
8 |
Siemens AG | 24990 |
7 |
Siemens Energy Global GmbH & Co. KG | 2775 |
7 |
Samsung Electro-mechanics Co., Ltd. | 4798 |
6 |
Yazaki Corporation | 6282 |
6 |
Hitachi Energy Ltd. | 1921 |
6 |
Mitsubishi Electric Corporation | 43934 |
4 |
FANUC Corporation | 5803 |
4 |
Hyosung Corporation | 300 |
4 |
Trench Limited | 22 |
4 |
Wurth Elektronik eiSos GmbH & Co. KG | 103 |
4 |
Moda-innochips Co., Ltd. | 98 |
4 |
HSP Hochspannungsgeräte GmbH | 69 |
3 |
JFE Steel Corporation | 6067 |
3 |
Hyundai Electric & Energy Systems Co., Ltd | 52 |
3 |
Murata Manufacturing Co., Ltd. | 22355 |
2 |
Analog Devices, Inc. | 3475 |
2 |
Aperam | 104 |
2 |
Coil Holding GmbH | 18 |
2 |
Other owners | 98 |