- All sections
- C - Chemistrymetallurgy
- 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: 2321
10-year publication summary
|
200
|
218
|
229
|
264
|
229
|
211
|
253
|
231
|
200
|
159
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6255 |
334 |
| JFE Steel Corporation | 6852 |
270 |
| POSCO Co., Ltd. | 1568 |
169 |
| POSCO | 2187 |
113 |
| ArcelorMittal | 2289 |
110 |
| NIPPON STEEL Stainless Steel Corporation | 287 |
67 |
| True Velocity IP Holdings, Inc. | 247 |
57 |
| Baoshan Iron & Steel Co., Ltd. | 963 |
43 |
| Daido Steel Co., Ltd. | 270 |
38 |
| Outokumpu Oyj | 260 |
37 |
| Hyundai Steel Company | 427 |
29 |
| Nanjing Iron&Steel Co.,Ltd. | 163 |
26 |
| ThyssenKrupp Steel Europe AG | 955 |
23 |
| ATI Properties LLC | 204 |
20 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 61 |
18 |
| Kobe Steel, Ltd. | 872 |
18 |
| CRS Holdings, LLC | 155 |
17 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 167 |
16 |
| Sandvik Intellectual Property AB | 1486 |
16 |
| Jiangsu Shagang Group Co., Ltd. | 91 |
15 |
| Other owners | 885 |