- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/04 - Ferrous alloys, e.g. steel alloys containing manganese
Patent holdings for IPC class C22C 38/04
Total number of patents in this class: 7980
10-year publication summary
|
689
|
740
|
719
|
788
|
738
|
637
|
752
|
792
|
804
|
366
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6767 |
1056 |
| Nippon Steel Corporation | 6166 |
1016 |
| ArcelorMittal | 2227 |
615 |
| POSCO Co., Ltd. | 1395 |
566 |
| POSCO | 2189 |
549 |
| Baoshan Iron & Steel Co., Ltd. | 955 |
329 |
| ThyssenKrupp Steel Europe AG | 950 |
187 |
| Hyundai Steel Company | 396 |
111 |
| NIPPON STEEL Stainless Steel Corporation | 292 |
82 |
| ThyssenKrupp AG | 3266 |
80 |
| Nanjing Iron&Steel Co.,Ltd. | 161 |
80 |
| Salzgitter Flachstahl GmbH | 158 |
74 |
| Tata Steel Ijmuiden B.V. | 304 |
71 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2872 |
66 |
| Voestalpine Stahl GmbH | 353 |
60 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
56 |
| True Velocity IP Holdings, Inc. | 246 |
56 |
| Kobe Steel, Ltd. | 870 |
55 |
| Jiangsu Shagang Group Co., Ltd. | 88 |
44 |
| Daido Steel Co., Ltd. | 268 |
43 |
| Other owners | 2784 |