- 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: 8255
10-year publication summary
|
607
|
672
|
662
|
748
|
704
|
590
|
719
|
760
|
794
|
595
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6916 |
1077 |
| Nippon Steel Corporation | 6334 |
1042 |
| POSCO Co., Ltd. | 1571 |
649 |
| ArcelorMittal | 2319 |
647 |
| POSCO | 2183 |
548 |
| Baoshan Iron & Steel Co., Ltd. | 966 |
336 |
| ThyssenKrupp Steel Europe AG | 959 |
189 |
| Hyundai Steel Company | 435 |
130 |
| NIPPON STEEL Stainless Steel Corporation | 283 |
83 |
| Nanjing Iron&Steel Co.,Ltd. | 165 |
82 |
| ThyssenKrupp AG | 3308 |
80 |
| Salzgitter Flachstahl GmbH | 159 |
74 |
| Tata Steel Ijmuiden B.V. | 311 |
73 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2877 |
64 |
| Voestalpine Stahl GmbH | 359 |
63 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
56 |
| Kobe Steel, Ltd. | 879 |
56 |
| True Velocity IP Holdings, Inc. | 247 |
56 |
| Jiangsu Shagang Group Co., Ltd. | 92 |
48 |
| Daido Steel Co., Ltd. | 271 |
45 |
| Other owners | 2857 |