- All sections
- C - Chemistry; metallurgy
- 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: 1313
10-year publication summary
|
156
|
127
|
140
|
147
|
156
|
126
|
107
|
116
|
129
|
83
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5824 |
197 |
| JFE Steel Corporation | 6308 |
156 |
| POSCO Co., Ltd. | 1241 |
69 |
| Baoshan Iron & Steel Co., Ltd. | 858 |
54 |
| ArcelorMittal | 1986 |
52 |
| POSCO | 2211 |
50 |
| ThyssenKrupp Steel Europe AG | 936 |
25 |
| Uddeholms Aktiebolag | 193 |
22 |
| Hyundai Steel Company | 337 |
21 |
| Tata Steel Ijmuiden B.V. | 293 |
20 |
| Aktiebolaget SKF | 2760 |
17 |
| Salzgitter Flachstahl GmbH | 158 |
17 |
| Hitachi Metals, Ltd. | 2122 |
16 |
| NIPPON STEEL Stainless Steel Corporation | 271 |
14 |
| NTN Corporation | 4983 |
12 |
| ThyssenKrupp AG | 3147 |
12 |
| Caterpillar Inc. | 8994 |
10 |
| JTEKT Corporation | 2399 |
10 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
10 |
| Northeastern University | 509 |
9 |
| Other owners | 520 |