- All sections
- C - Chemistry; metallurgy
- 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: 7655
10-year publication summary
|
689
|
740
|
719
|
788
|
738
|
636
|
748
|
780
|
791
|
60
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6557 |
1019 |
| Nippon Steel Corporation | 6012 |
976 |
| POSCO | 2204 |
554 |
| ArcelorMittal | 2064 |
538 |
| POSCO Co., Ltd. | 1302 |
526 |
| Baoshan Iron & Steel Co., Ltd. | 897 |
301 |
| ThyssenKrupp Steel Europe AG | 956 |
186 |
| Hyundai Steel Company | 350 |
88 |
| ThyssenKrupp AG | 3207 |
80 |
| NIPPON STEEL Stainless Steel Corporation | 281 |
78 |
| Nanjing Iron&Steel Co.,Ltd. | 153 |
77 |
| Salzgitter Flachstahl GmbH | 156 |
73 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2906 |
71 |
| Tata Steel Ijmuiden B.V. | 300 |
71 |
| Voestalpine Stahl GmbH | 344 |
59 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
56 |
| True Velocity IP Holdings, Inc. | 238 |
56 |
| Kobe Steel, Ltd. | 863 |
54 |
| Hitachi Metals, Ltd. | 2021 |
42 |
| Nucor Corporation | 419 |
41 |
| Other owners | 2709 |