- All sections
- C - Chemistry; metallurgy
- C22C - Alloys
- C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
Patent holdings for IPC class C22C 38/46
Total number of patents in this class: 1777
10-year publication summary
|
158
|
170
|
189
|
191
|
211
|
197
|
182
|
231
|
191
|
54
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5649 |
245 |
| JFE Steel Corporation | 6067 |
202 |
| ArcelorMittal | 1887 |
102 |
| POSCO Co., Ltd. | 1059 |
72 |
| POSCO | 2222 |
63 |
| NIPPON STEEL Stainless Steel Corporation | 254 |
43 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
37 |
| Daido Steel Co., Ltd. | 237 |
22 |
| Nanjing Iron&Steel Co.,Ltd. | 135 |
22 |
| ThyssenKrupp Steel Europe AG | 924 |
21 |
| Hyundai Motor Company | 19021 |
18 |
| ThyssenKrupp AG | 3086 |
17 |
| Uddeholms Aktiebolag | 197 |
15 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 171 |
14 |
| CRS Holdings, LLC | 156 |
14 |
| Hyundai Steel Company | 310 |
13 |
| Outokumpu Oyj | 250 |
13 |
| Aktiebolaget SKF | 2700 |
12 |
| Aubert & Duval | 106 |
12 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 58 |
12 |
| Other owners | 808 |