- 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: 7071
10-year publication summary
|
616
|
689
|
740
|
718
|
786
|
737
|
630
|
744
|
762
|
244
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
945 |
| Nippon Steel Corporation | 5649 |
894 |
| POSCO | 2222 |
551 |
| ArcelorMittal | 1887 |
494 |
| POSCO Co., Ltd. | 1059 |
437 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
272 |
| ThyssenKrupp Steel Europe AG | 924 |
171 |
| ThyssenKrupp AG | 3086 |
82 |
| Hyundai Steel Company | 310 |
75 |
| NIPPON STEEL Stainless Steel Corporation | 254 |
74 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
72 |
| Salzgitter Flachstahl GmbH | 155 |
71 |
| Tata Steel Ijmuiden B.V. | 283 |
68 |
| Nanjing Iron&Steel Co.,Ltd. | 135 |
64 |
| Kobe Steel, Ltd. | 912 |
59 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
56 |
| True Velocity IP Holdings, LLC | 255 |
56 |
| Voestalpine Stahl GmbH | 311 |
48 |
| Hitachi Metals, Ltd. | 2175 |
42 |
| Nucor Corporation | 425 |
40 |
| Other owners | 2500 |