- 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: 465
10-year publication summary
|
37
|
31
|
18
|
20
|
29
|
34
|
17
|
27
|
13
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6855 |
42 |
| Hitachi Metals, Ltd. | 1900 |
35 |
| Nitto Denko Corporation | 8526 |
24 |
| Shin-Etsu Chemical Co., Ltd. | 6083 |
22 |
| Toshiba Corporation | 12548 |
14 |
| ULVAC, Inc. | 1347 |
12 |
| Beijing Zhong Ke San Huan Hi-Tech Co.,Ltd | 47 |
11 |
| Showa Denko K.K. | 2072 |
10 |
| Hitachi, Ltd. | 16071 |
9 |
| Intermetallics Co., Ltd. | 33 |
9 |
| Nichia Corporation | 3872 |
8 |
| Toyota Motor Corporation | 35680 |
7 |
| Ford Global Technologies, LLC | 21478 |
7 |
| Proterial, Ltd. | 933 |
7 |
| Daido Steel Co., Ltd. | 284 |
6 |
| TOYOTA JIDOSHA KABUSHIKI KAISHA (also trading as TOYOTA MOTOR CORPORATION) | 12387 |
6 |
| Fujian Golden Dragon Rare-earth Co., Ltd. | 74 |
6 |
| LG Chem, Ltd. | 17921 |
5 |
| Toda Kogyo Corporation | 327 |
5 |
| Vacuumschmelze GmbH & Co. KG | 256 |
5 |
| Other owners | 215 |