- 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: 8667
10-year publication summary
|
672
|
663
|
749
|
704
|
590
|
721
|
766
|
795
|
742
|
243
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7349 |
1126 |
| Nippon Steel Corporation | 6692 |
1082 |
| ArcelorMittal | 2526 |
727 |
| POSCO Co., Ltd. | 1658 |
681 |
| POSCO | 2155 |
547 |
| Baoshan Iron & Steel Co., Ltd. | 1074 |
384 |
| ThyssenKrupp Steel Europe AG | 984 |
197 |
| Hyundai Steel Company | 496 |
165 |
| Nanjing Iron&Steel Co.,Ltd. | 181 |
88 |
| NIPPON STEEL Stainless Steel Corporation | 278 |
85 |
| Salzgitter Flachstahl GmbH | 162 |
76 |
| Tata Steel Ijmuiden B.V. | 319 |
75 |
| ThyssenKrupp AG | 3458 |
74 |
| Voestalpine Stahl GmbH | 384 |
67 |
| Kobe Steel, Ltd. | 895 |
60 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2836 |
58 |
| ArcelorMittal Investigacion y Desarrollo SL | 208 |
56 |
| True Velocity IP Holdings, Inc. | 249 |
56 |
| Jiangsu Shagang Group Co., Ltd. | 109 |
53 |
| Daido Steel Co., Ltd. | 280 |
49 |
| Other owners | 2961 |