- All sections
- H - Electricity
- H01F - Magnets; inductances; transformers; selection 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: 459
10-year publication summary
|
42
|
36
|
37
|
31
|
18
|
20
|
29
|
31
|
15
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6306 |
49 |
| Hitachi Metals, Ltd. | 2175 |
42 |
| Nitto Denko Corporation | 7879 |
24 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
23 |
| Toshiba Corporation | 12017 |
15 |
| ULVAC, Inc. | 1448 |
13 |
| Proterial, Ltd. | 638 |
12 |
| Showa Denko K.K. | 2539 |
10 |
| Beijing Zhong Ke San Huan Hi-Tech Co.,Ltd | 29 |
10 |
| Intermetallics Co., Ltd. | 34 |
9 |
| Neomax Co., Ltd. | 16 |
9 |
| Toyota Motor Corporation | 28582 |
8 |
| Ford Global Technologies, LLC | 19702 |
6 |
| Nichia Corporation | 3394 |
6 |
| Aichi Steel Corporation | 333 |
6 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 13301 |
6 |
| LG Chem, Ltd. | 17205 |
5 |
| Hitachi, Ltd. | 16452 |
5 |
| Daido Steel Co., Ltd. | 237 |
5 |
| Toda Kogyo Corporation | 323 |
5 |
| Other owners | 191 |