- 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: 2504
10-year publication summary
|
215
|
217
|
214
|
216
|
210
|
241
|
215
|
182
|
190
|
60
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6666 |
362 |
| JFE Steel Corporation | 7300 |
343 |
| ArcelorMittal | 2517 |
196 |
| POSCO Co., Ltd. | 1650 |
179 |
| POSCO | 2155 |
93 |
| Baoshan Iron & Steel Co., Ltd. | 1070 |
92 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
59 |
| Nanjing Iron&Steel Co.,Ltd. | 181 |
45 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2832 |
34 |
| Daido Steel Co., Ltd. | 279 |
31 |
| Nippon Steel & Sumitomo Metal Corporation | 1985 |
25 |
| ThyssenKrupp Steel Europe AG | 977 |
25 |
| Jiangsu Shagang Group Co., Ltd. | 107 |
24 |
| Hyundai Steel Company | 483 |
21 |
| Kobe Steel, Ltd. | 890 |
19 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 163 |
19 |
| Hitachi Metals, Ltd. | 1927 |
18 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 63 |
18 |
| Voestalpine Stahl GmbH | 378 |
17 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 73 |
16 |
| Other owners | 868 |