- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection 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: 239
10-year publication summary
|
19
|
28
|
26
|
16
|
24
|
21
|
18
|
20
|
15
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6919 |
20 |
| Siemens AG | 23996 |
15 |
| JFE Steel Corporation | 7574 |
12 |
| Hitachi Energy Ltd. | 2600 |
9 |
| Atlas Copco Airpower, naamloze vennootschap | 1079 |
7 |
| Voestalpine Stahl GmbH | 390 |
6 |
| 3m Innovative Properties Company | 17484 |
4 |
| Vacuumschmelze GmbH & Co. KG | 255 |
4 |
| Hangnam Co., Ltd. | 6 |
4 |
| General Electric Company | 13912 |
3 |
| International Business Machines Corporation | 62742 |
3 |
| Panasonic Intellectual Property Management Co., Ltd. | 34145 |
3 |
| Aichi Steel Corporation | 392 |
3 |
| Aperam | 140 |
3 |
| Auckland UniServices Limited | 497 |
3 |
| BMC Co., Ltd. | 51 |
3 |
| Feintool International Holding AG | 98 |
3 |
| Mitsui High-tec, Inc. | 262 |
3 |
| Toshiba Materials Co., Ltd. | 563 |
3 |
| Beijing Naura Microelectronics Equipment Co., Ltd. | 743 |
3 |
| Other owners | 125 |