- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
Patent holdings for IPC class C22C 38/02
Total number of patents in this class: 8674
10-year publication summary
|
619
|
710
|
741
|
799
|
775
|
659
|
870
|
825
|
865
|
688
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6396 |
1104 |
| JFE Steel Corporation | 6974 |
1049 |
| ArcelorMittal | 2334 |
734 |
| POSCO Co., Ltd. | 1573 |
702 |
| POSCO | 2179 |
520 |
| Baoshan Iron & Steel Co., Ltd. | 968 |
362 |
| ThyssenKrupp Steel Europe AG | 961 |
172 |
| Hyundai Steel Company | 443 |
138 |
| Nanjing Iron&Steel Co.,Ltd. | 166 |
100 |
| NIPPON STEEL Stainless Steel Corporation | 282 |
98 |
| ThyssenKrupp AG | 3315 |
81 |
| Voestalpine Stahl GmbH | 362 |
77 |
| Salzgitter Flachstahl GmbH | 159 |
69 |
| Tata Steel Ijmuiden B.V. | 310 |
68 |
| Daido Steel Co., Ltd. | 272 |
57 |
| Kobe Steel, Ltd. | 884 |
57 |
| True Velocity IP Holdings, Inc. | 247 |
57 |
| Jiangsu Shagang Group Co., Ltd. | 95 |
49 |
| Hitachi Metals, Ltd. | 1970 |
47 |
| TDK Corporation | 6873 |
44 |
| Other owners | 3089 |