- 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: 8468
10-year publication summary
|
672
|
662
|
748
|
704
|
590
|
721
|
765
|
794
|
741
|
43
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7138 |
1097 |
| Nippon Steel Corporation | 6564 |
1062 |
| ArcelorMittal | 2437 |
695 |
| POSCO Co., Ltd. | 1618 |
664 |
| POSCO | 2154 |
547 |
| Baoshan Iron & Steel Co., Ltd. | 1029 |
367 |
| ThyssenKrupp Steel Europe AG | 968 |
191 |
| Hyundai Steel Company | 462 |
144 |
| Nanjing Iron&Steel Co.,Ltd. | 174 |
84 |
| NIPPON STEEL Stainless Steel Corporation | 276 |
84 |
| ThyssenKrupp AG | 3381 |
80 |
| Salzgitter Flachstahl GmbH | 161 |
75 |
| Tata Steel Ijmuiden B.V. | 311 |
73 |
| Voestalpine Stahl GmbH | 375 |
65 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2864 |
64 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
56 |
| Kobe Steel, Ltd. | 884 |
56 |
| True Velocity IP Holdings, Inc. | 247 |
56 |
| Jiangsu Shagang Group Co., Ltd. | 99 |
49 |
| Daido Steel Co., Ltd. | 275 |
48 |
| Other owners | 2911 |