- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/10 - Ferrous alloys, e.g. steel alloys containing cobalt
Patent holdings for IPC class C22C 38/10
Total number of patents in this class: 804
10-year publication summary
|
59
|
87
|
72
|
57
|
80
|
63
|
77
|
77
|
85
|
45
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6750 |
78 |
| Nippon Steel Corporation | 6271 |
78 |
| JFE Steel Corporation | 6853 |
63 |
| Proterial, Ltd. | 852 |
32 |
| Fujian Golden Dragon Rare-earth Co., Ltd. | 64 |
26 |
| Toshiba Corporation | 12350 |
22 |
| Aperam | 121 |
21 |
| Vacuumschmelze GmbH & Co. KG | 262 |
18 |
| Daido Steel Co., Ltd. | 270 |
15 |
| Shin-Etsu Chemical Co., Ltd. | 5663 |
14 |
| Yantai Dongxing Magnetic Materials Inc. | 34 |
14 |
| Toyota Motor Corporation | 32331 |
13 |
| Hitachi Metals, Ltd. | 1977 |
12 |
| Fujian Changting Golden Dragon Rare-earth Co., Ltd. | 78 |
12 |
| POSCO Co., Ltd. | 1567 |
10 |
| Xiamen Tungsten Co., Ltd. | 105 |
10 |
| Yantai Zhenghai Magnetic Material Co., Ltd. | 48 |
10 |
| Hitachi, Ltd. | 15499 |
9 |
| Shinhokoku Material Corp. | 14 |
9 |
| Grirem Advanced Materials Co., Ltd. | 134 |
8 |
| Other owners | 330 |