- 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: 9194
10-year publication summary
|
769
|
803
|
838
|
807
|
702
|
909
|
862
|
897
|
874
|
343
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6751 |
1142 |
| JFE Steel Corporation | 7407 |
1100 |
| ArcelorMittal | 2572 |
818 |
| POSCO Co., Ltd. | 1687 |
757 |
| POSCO | 2153 |
522 |
| Baoshan Iron & Steel Co., Ltd. | 1091 |
421 |
| ThyssenKrupp Steel Europe AG | 987 |
182 |
| Hyundai Steel Company | 508 |
180 |
| Nanjing Iron&Steel Co.,Ltd. | 184 |
108 |
| NIPPON STEEL Stainless Steel Corporation | 278 |
102 |
| Voestalpine Stahl GmbH | 384 |
82 |
| ThyssenKrupp AG | 3475 |
75 |
| Salzgitter Flachstahl GmbH | 163 |
72 |
| Tata Steel Ijmuiden B.V. | 320 |
71 |
| Daido Steel Co., Ltd. | 281 |
62 |
| Kobe Steel, Ltd. | 897 |
59 |
| True Velocity IP Holdings, Inc. | 249 |
57 |
| Jiangsu Shagang Group Co., Ltd. | 109 |
55 |
| Hitachi Metals, Ltd. | 1916 |
46 |
| TDK Corporation | 6821 |
45 |
| Other owners | 3238 |