- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
Patent holdings for IPC class C22C 38/14
Total number of patents in this class: 3178
10-year publication summary
|
243
|
267
|
235
|
247
|
260
|
194
|
220
|
244
|
285
|
237
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6874 |
779 |
| Nippon Steel Corporation | 6296 |
487 |
| POSCO Co., Ltd. | 1570 |
235 |
| ArcelorMittal | 2315 |
217 |
| Baoshan Iron & Steel Co., Ltd. | 965 |
174 |
| POSCO | 2184 |
149 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
97 |
| ThyssenKrupp Steel Europe AG | 956 |
75 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2875 |
59 |
| TDK Corporation | 6791 |
49 |
| Hyundai Steel Company | 431 |
47 |
| Tata Steel Ijmuiden B.V. | 311 |
33 |
| ThyssenKrupp AG | 3298 |
30 |
| Voestalpine Stahl GmbH | 357 |
29 |
| Kobe Steel, Ltd. | 878 |
24 |
| Nisshin Steel Co., Ltd. | 394 |
19 |
| Salzgitter Flachstahl GmbH | 159 |
19 |
| Fujian Golden Dragon Rare-earth Co., Ltd. | 64 |
17 |
| Nanjing Iron&Steel Co.,Ltd. | 165 |
16 |
| Proterial, Ltd. | 856 |
16 |
| Other owners | 607 |