- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
Patent holdings for IPC class C22C 38/50
Total number of patents in this class: 2353
10-year publication summary
|
200
|
215
|
217
|
214
|
216
|
210
|
239
|
214
|
181
|
132
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6286 |
344 |
| JFE Steel Corporation | 6860 |
333 |
| ArcelorMittal | 2300 |
166 |
| POSCO Co., Ltd. | 1569 |
163 |
| POSCO | 2184 |
93 |
| Baoshan Iron & Steel Co., Ltd. | 964 |
77 |
| NIPPON STEEL Stainless Steel Corporation | 287 |
60 |
| Nanjing Iron&Steel Co.,Ltd. | 165 |
43 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2870 |
32 |
| Daido Steel Co., Ltd. | 271 |
27 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
25 |
| ThyssenKrupp Steel Europe AG | 956 |
24 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 167 |
20 |
| Jiangsu Shagang Group Co., Ltd. | 92 |
20 |
| Kobe Steel, Ltd. | 878 |
19 |
| Hitachi Metals, Ltd. | 1977 |
18 |
| Hyundai Steel Company | 430 |
18 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 61 |
17 |
| Outokumpu Oyj | 260 |
15 |
| Salzgitter Flachstahl GmbH | 159 |
15 |
| Other owners | 824 |