- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/12 - Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium or niobium
Patent holdings for IPC class C22C 38/12
Total number of patents in this class: 2967
10-year publication summary
|
271
|
266
|
287
|
252
|
214
|
231
|
226
|
278
|
218
|
82
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7407 |
555 |
| Nippon Steel Corporation | 6751 |
393 |
| ArcelorMittal | 2572 |
281 |
| POSCO Co., Ltd. | 1687 |
211 |
| Baoshan Iron & Steel Co., Ltd. | 1091 |
155 |
| POSCO | 2153 |
126 |
| ThyssenKrupp Steel Europe AG | 987 |
66 |
| Hyundai Steel Company | 508 |
38 |
| Tata Steel Ijmuiden B.V. | 320 |
37 |
| Voestalpine Stahl GmbH | 384 |
30 |
| TDK Corporation | 6821 |
29 |
| Nanjing Iron&Steel Co.,Ltd. | 184 |
27 |
| Salzgitter Flachstahl GmbH | 163 |
26 |
| Nucor Corporation | 414 |
22 |
| Vacuumschmelze GmbH & Co. KG | 258 |
22 |
| ThyssenKrupp AG | 3475 |
21 |
| Kobe Steel, Ltd. | 897 |
20 |
| Proterial, Ltd. | 928 |
16 |
| Fujian Golden Dragon Rare-earth Co., Ltd. | 74 |
16 |
| ArcelorMittal Investigacion y Desarrollo SL | 208 |
15 |
| Other owners | 861 |