- 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: 860
10-year publication summary
|
87
|
72
|
57
|
80
|
65
|
79
|
81
|
85
|
61
|
31
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6821 |
83 |
| Nippon Steel Corporation | 6751 |
83 |
| JFE Steel Corporation | 7407 |
72 |
| Proterial, Ltd. | 928 |
36 |
| Fujian Golden Dragon Rare-earth Co., Ltd. | 74 |
26 |
| Aperam | 135 |
24 |
| Toshiba Corporation | 12687 |
22 |
| Vacuumschmelze GmbH & Co. KG | 258 |
18 |
| Daido Steel Co., Ltd. | 281 |
16 |
| Shin-Etsu Chemical Co., Ltd. | 5997 |
15 |
| Yantai Dongxing Magnetic Materials Inc. | 35 |
14 |
| Toyota Motor Corporation | 34999 |
13 |
| Hitachi Metals, Ltd. | 1916 |
12 |
| Yantai Zhenghai Magnetic Material Co., Ltd. | 54 |
12 |
| Fujian Changting Golden Dragon Rare-earth Co., Ltd. | 78 |
12 |
| Hitachi, Ltd. | 15944 |
10 |
| POSCO Co., Ltd. | 1687 |
10 |
| Xiamen Tungsten Co., Ltd. | 107 |
10 |
| Shinhokoku Material Corp. | 16 |
10 |
| Grirem Advanced Materials Co., Ltd. | 139 |
8 |
| Other owners | 354 |