- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/46 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
Patent holdings for IPC class C22C 38/46
Total number of patents in this class: 1913
10-year publication summary
|
170
|
189
|
191
|
211
|
197
|
182
|
232
|
201
|
153
|
56
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6139 |
272 |
| JFE Steel Corporation | 6730 |
212 |
| ArcelorMittal | 2197 |
107 |
| POSCO Co., Ltd. | 1381 |
87 |
| POSCO | 2188 |
64 |
| NIPPON STEEL Stainless Steel Corporation | 290 |
48 |
| Baoshan Iron & Steel Co., Ltd. | 950 |
47 |
| Nanjing Iron&Steel Co.,Ltd. | 161 |
28 |
| Daido Steel Co., Ltd. | 262 |
27 |
| ThyssenKrupp Steel Europe AG | 950 |
24 |
| Hyundai Steel Company | 389 |
19 |
| Hyundai Motor Company | 21451 |
17 |
| ThyssenKrupp AG | 3254 |
16 |
| Uddeholms Aktiebolag | 195 |
15 |
| CRS Holdings, LLC | 154 |
15 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 168 |
14 |
| Outokumpu Oyj | 257 |
13 |
| Aubert & Duval | 111 |
12 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 61 |
12 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2866 |
12 |
| Other owners | 852 |