- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/54 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
Patent holdings for IPC class C22C 38/54
Total number of patents in this class: 2274
10-year publication summary
|
203
|
185
|
215
|
179
|
171
|
227
|
187
|
149
|
172
|
104
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6843 |
478 |
| JFE Steel Corporation | 7508 |
363 |
| ArcelorMittal | 2663 |
154 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
104 |
| POSCO Co., Ltd. | 2006 |
96 |
| Baoshan Iron & Steel Co., Ltd. | 1101 |
64 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
63 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2831 |
61 |
| POSCO | 2147 |
46 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 157 |
45 |
| Daido Steel Co., Ltd. | 284 |
31 |
| ThyssenKrupp Steel Europe AG | 989 |
26 |
| Nanjing Iron&Steel Co.,Ltd. | 186 |
25 |
| Hyundai Steel Company | 529 |
19 |
| Nisshin Steel Co., Ltd. | 382 |
19 |
| Kobe Steel, Ltd. | 899 |
17 |
| Voestalpine Stahl GmbH | 389 |
16 |
| Hitachi Metals, Ltd. | 1900 |
14 |
| SSAB Technology AB | 162 |
14 |
| ThyssenKrupp AG | 3423 |
14 |
| Other owners | 605 |