- 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: 9023
10-year publication summary
|
740
|
720
|
789
|
738
|
637
|
760
|
804
|
828
|
803
|
594
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7508 |
1151 |
| Nippon Steel Corporation | 6843 |
1110 |
| POSCO Co., Ltd. | 2006 |
824 |
| ArcelorMittal | 2663 |
788 |
| POSCO | 2147 |
548 |
| Baoshan Iron & Steel Co., Ltd. | 1101 |
401 |
| ThyssenKrupp Steel Europe AG | 989 |
198 |
| Hyundai Steel Company | 529 |
180 |
| Nanjing Iron&Steel Co.,Ltd. | 186 |
91 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
86 |
| Salzgitter Flachstahl GmbH | 163 |
77 |
| Tata Steel Ijmuiden B.V. | 325 |
77 |
| ThyssenKrupp AG | 3423 |
72 |
| Voestalpine Stahl GmbH | 389 |
67 |
| Kobe Steel, Ltd. | 899 |
60 |
| ArcelorMittal Investigacion y Desarrollo SL | 207 |
56 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2831 |
56 |
| True Velocity IP Holdings, Inc. | 249 |
56 |
| Jiangsu Shagang Group Co., Ltd. | 112 |
54 |
| Daido Steel Co., Ltd. | 284 |
49 |
| Other owners | 3022 |