- 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: 844
10-year publication summary
|
65
|
82
|
88
|
92
|
63
|
58
|
45
|
37
|
36
|
21
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6974 |
86 |
| Nippon Steel Corporation | 6396 |
75 |
| POSCO | 2179 |
32 |
| ArcelorMittal | 2334 |
28 |
| POSCO Co., Ltd. | 1573 |
28 |
| Baoshan Iron & Steel Co., Ltd. | 968 |
16 |
| NIPPON STEEL Stainless Steel Corporation | 282 |
16 |
| Outokumpu Oyj | 261 |
15 |
| Sandvik Intellectual Property AB | 1474 |
15 |
| ThyssenKrupp Steel Europe AG | 961 |
13 |
| Hitachi Metals, Ltd. | 1970 |
12 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 166 |
9 |
| Kubota Corporation | 4007 |
8 |
| VDM Metals International GmbH | 105 |
8 |
| BASF SE | 21039 |
7 |
| ArcelorMittal Wire France | 42 |
7 |
| Stamicarbon B.V. | 306 |
7 |
| ThyssenKrupp AG | 3315 |
7 |
| United States Steel Corporation | 174 |
7 |
| Siemens AG | 24353 |
6 |
| Other owners | 442 |