- All sections
- H - Electricity
- H01F - Magnetsinductancestransformersselection of materials for their magnetic properties
- H01F 1/053 - Alloys characterised by their composition containing rare earth metals
Patent holdings for IPC class H01F 1/053
Total number of patents in this class: 462
10-year publication summary
|
36
|
37
|
31
|
18
|
20
|
29
|
32
|
17
|
27
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6565 |
45 |
| Hitachi Metals, Ltd. | 2017 |
41 |
| Nitto Denko Corporation | 8100 |
24 |
| Shin-Etsu Chemical Co., Ltd. | 5460 |
23 |
| Toshiba Corporation | 12076 |
15 |
| ULVAC, Inc. | 1402 |
13 |
| Hitachi, Ltd. | 15247 |
10 |
| Showa Denko K.K. | 2331 |
10 |
| Beijing Zhong Ke San Huan Hi-Tech Co.,Ltd | 36 |
10 |
| Intermetallics Co., Ltd. | 33 |
9 |
| Toyota Motor Corporation | 30540 |
7 |
| Nichia Corporation | 3562 |
7 |
| Proterial, Ltd. | 768 |
7 |
| Ford Global Technologies, LLC | 20102 |
6 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13060 |
6 |
| LG Chem, Ltd. | 17657 |
5 |
| Daido Steel Co., Ltd. | 258 |
5 |
| Neomax Co., Ltd. | 6 |
5 |
| Toda Kogyo Corporation | 341 |
5 |
| Vacuumschmelze GmbH & Co. KG | 263 |
5 |
| Other owners | 204 |