- All sections
- C - Chemistry; metallurgy
- 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: 708
10-year publication summary
|
48
|
59
|
87
|
72
|
56
|
79
|
61
|
76
|
74
|
27
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| TDK Corporation | 6306 |
70 |
| Nippon Steel Corporation | 5649 |
68 |
| JFE Steel Corporation | 6067 |
42 |
| Proterial, Ltd. | 638 |
26 |
| Toshiba Corporation | 12017 |
20 |
| Aperam | 104 |
20 |
| Vacuumschmelze GmbH & Co. KG | 253 |
18 |
| Fujian Golden Dragon Rare-earth Co., Ltd. | 39 |
18 |
| Hitachi Metals, Ltd. | 2175 |
15 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
14 |
| Daido Steel Co., Ltd. | 237 |
14 |
| Fujian Changting Golden Dragon Rare-earth Co., Ltd. | 81 |
14 |
| Toyota Motor Corporation | 28582 |
13 |
| Yantai Dongxing Magnetic Materials Inc. | 29 |
11 |
| Xiamen Tungsten Co., Ltd. | 99 |
10 |
| Santoku Corporation | 85 |
8 |
| Grirem Advanced Materials Co., Ltd. | 114 |
7 |
| POSCO Co., Ltd. | 1059 |
7 |
| SANYO Special Steel Co., Ltd. | 201 |
7 |
| POSCO | 2222 |
6 |
| Other owners | 300 |