- 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: 2558
10-year publication summary
|
218
|
229
|
265
|
229
|
211
|
255
|
234
|
209
|
229
|
150
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6839 |
359 |
| JFE Steel Corporation | 7483 |
286 |
| POSCO Co., Ltd. | 1997 |
223 |
| ArcelorMittal | 2656 |
144 |
| POSCO | 2147 |
113 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
68 |
| True Velocity IP Holdings, Inc. | 249 |
57 |
| Baoshan Iron & Steel Co., Ltd. | 1098 |
54 |
| Daido Steel Co., Ltd. | 284 |
43 |
| Hyundai Steel Company | 528 |
38 |
| Outokumpu Oyj | 265 |
37 |
| Nanjing Iron&Steel Co.,Ltd. | 186 |
29 |
| ThyssenKrupp Steel Europe AG | 989 |
24 |
| ATI Properties LLC | 200 |
20 |
| Kobe Steel, Ltd. | 899 |
20 |
| Jiangsu Shagang Group Co., Ltd. | 112 |
19 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 64 |
18 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 157 |
16 |
| voestalpine Böhler Edelstahl GmbH & Co KG | 64 |
16 |
| Sandvik Intellectual Property AB | 1400 |
15 |
| Other owners | 959 |