- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/40 - Ferrous alloys, e.g. steel alloys containing chromium with nickel
Patent holdings for IPC class C22C 38/40
Total number of patents in this class: 875
10-year publication summary
|
91
|
96
|
99
|
69
|
62
|
49
|
39
|
39
|
33
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7508 |
87 |
| Nippon Steel Corporation | 6843 |
77 |
| ArcelorMittal | 2663 |
38 |
| POSCO | 2147 |
31 |
| POSCO Co., Ltd. | 2006 |
31 |
| Baoshan Iron & Steel Co., Ltd. | 1101 |
22 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
16 |
| Outokumpu Oyj | 265 |
15 |
| Hitachi Metals, Ltd. | 1900 |
12 |
| Sandvik Intellectual Property AB | 1398 |
12 |
| ThyssenKrupp Steel Europe AG | 989 |
12 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 157 |
9 |
| Kubota Corporation | 4388 |
8 |
| VDM Metals International GmbH | 105 |
8 |
| Siemens AG | 24033 |
7 |
| ArcelorMittal Wire France | 40 |
7 |
| Stamicarbon B.V. | 319 |
7 |
| ThyssenKrupp AG | 3423 |
7 |
| United States Steel Corporation | 172 |
7 |
| BASF SE | 21303 |
6 |
| Other owners | 456 |