- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
Patent holdings for IPC class C22C 38/48
Total number of patents in this class: 2220
10-year publication summary
|
169
|
189
|
209
|
234
|
212
|
217
|
237
|
221
|
174
|
139
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6344 |
306 |
| JFE Steel Corporation | 6935 |
264 |
| POSCO Co., Ltd. | 1572 |
150 |
| ArcelorMittal | 2324 |
146 |
| POSCO | 2181 |
100 |
| NIPPON STEEL Stainless Steel Corporation | 282 |
60 |
| Baoshan Iron & Steel Co., Ltd. | 966 |
57 |
| True Velocity IP Holdings, Inc. | 247 |
57 |
| Nanjing Iron&Steel Co.,Ltd. | 166 |
34 |
| Daido Steel Co., Ltd. | 271 |
30 |
| ThyssenKrupp Steel Europe AG | 958 |
22 |
| Hyundai Steel Company | 439 |
20 |
| Hitachi Metals, Ltd. | 1973 |
18 |
| Jiangsu Shagang Group Co., Ltd. | 93 |
17 |
| Hyundai Motor Company | 22315 |
16 |
| Outokumpu Oyj | 261 |
16 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 62 |
14 |
| Voestalpine Stahl GmbH | 359 |
14 |
| ThyssenKrupp AG | 3310 |
13 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 67 |
13 |
| Other owners | 853 |