- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection of materials for their magnetic properties
- H01F 1/057 - Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
Patent holdings for IPC class H01F 1/057
Total number of patents in this class: 1473
10-year publication summary
|
125
|
124
|
98
|
122
|
96
|
94
|
149
|
128
|
91
|
38
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6306 |
176 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
81 |
| Fujian Changting Golden Dragon Rare-earth Co., Ltd. | 81 |
74 |
| Proterial, Ltd. | 638 |
70 |
| Xiamen Tungsten Co., Ltd. | 99 |
68 |
| Hitachi Metals, Ltd. | 2175 |
61 |
| Nitto Denko Corporation | 7879 |
34 |
| Toyota Motor Corporation | 28582 |
32 |
| Fujian Golden Dragon Rare-earth Co., Ltd. | 39 |
32 |
| Daido Steel Co., Ltd. | 237 |
28 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
27 |
| Yantai Dongxing Magnetic Materials Inc. | 29 |
25 |
| Yantai Zhenghai Magnetic Material Co., Ltd. | 30 |
23 |
| Intermetallics Co., Ltd. | 34 |
19 |
| Ford Global Technologies, LLC | 19702 |
17 |
| Beijing Zhong Ke San Huan Hi-Tech Co.,Ltd | 29 |
16 |
| LG Chem, Ltd. | 17205 |
15 |
| Mitsubishi Electric Corporation | 43934 |
15 |
| Aichi Steel Corporation | 333 |
14 |
| Shenyang General Magnetic Co., Ltd. | 18 |
14 |
| Other owners | 632 |