- All sections
- C - Chemistry; metallurgy
- C22C - Alloys
- C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
Patent holdings for IPC class C22C 38/42
Total number of patents in this class: 2157
10-year publication summary
|
200
|
218
|
229
|
264
|
230
|
211
|
252
|
224
|
194
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5982 |
318 |
| JFE Steel Corporation | 6527 |
261 |
| POSCO Co., Ltd. | 1290 |
122 |
| POSCO | 2204 |
114 |
| ArcelorMittal | 2047 |
82 |
| NIPPON STEEL Stainless Steel Corporation | 280 |
64 |
| True Velocity IP Holdings, Inc. | 237 |
57 |
| Baoshan Iron & Steel Co., Ltd. | 888 |
39 |
| Outokumpu Oyj | 251 |
37 |
| Daido Steel Co., Ltd. | 258 |
34 |
| Nanjing Iron&Steel Co.,Ltd. | 153 |
25 |
| ThyssenKrupp Steel Europe AG | 953 |
22 |
| ATI Properties LLC | 203 |
20 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 62 |
18 |
| Hyundai Steel Company | 348 |
17 |
| Sandvik Intellectual Property AB | 1546 |
17 |
| CRS Holdings, LLC | 157 |
17 |
| Kobe Steel, Ltd. | 862 |
16 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 169 |
16 |
| ThyssenKrupp AG | 3207 |
14 |
| Other owners | 847 |