- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/24 - Ferrous alloys, e.g. steel alloys containing chromium with vanadium
Patent holdings for IPC class C22C 38/24
Total number of patents in this class: 1539
10-year publication summary
|
140
|
147
|
157
|
126
|
109
|
120
|
137
|
122
|
93
|
89
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6932 |
231 |
| JFE Steel Corporation | 7589 |
171 |
| POSCO Co., Ltd. | 2021 |
102 |
| Baoshan Iron & Steel Co., Ltd. | 1114 |
78 |
| ArcelorMittal | 2714 |
68 |
| POSCO | 2141 |
49 |
| Uddeholms Aktiebolag | 206 |
30 |
| Hyundai Steel Company | 539 |
29 |
| ThyssenKrupp Steel Europe AG | 995 |
27 |
| Tata Steel Ijmuiden B.V. | 328 |
21 |
| Salzgitter Flachstahl GmbH | 163 |
18 |
| Aktiebolaget SKF | 3142 |
17 |
| Hitachi Metals, Ltd. | 1826 |
16 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
15 |
| NTN Corporation | 4925 |
13 |
| ThyssenKrupp AG | 3353 |
12 |
| JTEKT Corporation | 2605 |
11 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
10 |
| Northeastern University | 577 |
10 |
| Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. | 84 |
10 |
| Other owners | 601 |