- 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: 3049
10-year publication summary
|
271
|
266
|
287
|
252
|
214
|
232
|
226
|
278
|
223
|
170
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7527 |
571 |
| Nippon Steel Corporation | 6871 |
406 |
| ArcelorMittal | 2672 |
285 |
| POSCO Co., Ltd. | 2012 |
233 |
| Baoshan Iron & Steel Co., Ltd. | 1102 |
158 |
| POSCO | 2143 |
126 |
| ThyssenKrupp Steel Europe AG | 990 |
64 |
| Hyundai Steel Company | 531 |
44 |
| Tata Steel Ijmuiden B.V. | 326 |
39 |
| Voestalpine Stahl GmbH | 388 |
30 |
| TDK Corporation | 6858 |
29 |
| Nanjing Iron&Steel Co.,Ltd. | 186 |
28 |
| Salzgitter Flachstahl GmbH | 163 |
26 |
| Nucor Corporation | 418 |
23 |
| Vacuumschmelze GmbH & Co. KG | 255 |
22 |
| ThyssenKrupp AG | 3409 |
20 |
| Kobe Steel, Ltd. | 899 |
19 |
| Proterial, Ltd. | 935 |
16 |
| Fujian Golden Dragon Rare-earth Co., Ltd. | 74 |
16 |
| ArcelorMittal Investigacion y Desarrollo SL | 207 |
15 |
| Other owners | 879 |