- 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: 2368
10-year publication summary
|
197
|
203
|
218
|
252
|
222
|
207
|
247
|
223
|
196
|
197
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6482 |
340 |
| JFE Steel Corporation | 7054 |
277 |
| POSCO Co., Ltd. | 1592 |
171 |
| ArcelorMittal | 2396 |
124 |
| POSCO | 2175 |
113 |
| NIPPON STEEL Stainless Steel Corporation | 276 |
68 |
| True Velocity IP Holdings, Inc. | 246 |
57 |
| Baoshan Iron & Steel Co., Ltd. | 990 |
45 |
| Daido Steel Co., Ltd. | 276 |
41 |
| Outokumpu Oyj | 261 |
37 |
| Hyundai Steel Company | 452 |
31 |
| Nanjing Iron&Steel Co.,Ltd. | 171 |
27 |
| ThyssenKrupp Steel Europe AG | 962 |
23 |
| ATI Properties LLC | 203 |
20 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 63 |
18 |
| Kobe Steel, Ltd. | 885 |
18 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 164 |
16 |
| Sandvik Intellectual Property AB | 1457 |
16 |
| CRS Holdings, LLC | 152 |
16 |
| Jiangsu Shagang Group Co., Ltd. | 98 |
15 |
| Other owners | 895 |