- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 3/02 - Cores, yokes or armatures made from sheets
Patent holdings for IPC class H01F 3/02
Total number of patents in this class: 208
10-year publication summary
|
12
|
8
|
12
|
19
|
28
|
26
|
16
|
23
|
21
|
7
|
| 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens AG | 26186 |
14 |
| JFE Steel Corporation | 5545 |
10 |
| Nippon Steel Corporation | 5415 |
8 |
| Atlas Copco Airpower, naamloze vennootschap | 810 |
7 |
| Hitachi Energy Switzerland AG | 2016 |
7 |
| Kienle + Spiess GmbH | 30 |
5 |
| Voestalpine Stahl GmbH | 308 |
5 |
| International Business Machines Corporation | 63166 |
4 |
| Toshiba Materials Co., Ltd. | 566 |
4 |
| Hangnam Co., Ltd. | 6 |
4 |
| Siemens Energy Global GmbH & Co. KG | 2640 |
4 |
| General Electric Company | 25191 |
3 |
| Toyota Motor Corporation | 28316 |
3 |
| Panasonic Intellectual Property Management Co., Ltd. | 26851 |
3 |
| Aperam | 98 |
3 |
| BMC Co., Ltd. | 41 |
3 |
| Mitsui High-tec, Inc. | 260 |
3 |
| Vacuumschmelze GmbH & Co. KG | 254 |
3 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6264 |
3 |
| 3m Innovative Properties Company | 20456 |
2 |
| Other owners | 110 |