- 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: 839
10-year publication summary
|
69
|
91
|
96
|
99
|
69
|
62
|
47
|
38
|
37
|
20
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6840 |
86 |
| Nippon Steel Corporation | 6238 |
74 |
| POSCO | 2186 |
32 |
| ArcelorMittal | 2285 |
28 |
| POSCO Co., Ltd. | 1568 |
28 |
| Baoshan Iron & Steel Co., Ltd. | 964 |
16 |
| NIPPON STEEL Stainless Steel Corporation | 287 |
16 |
| Outokumpu Oyj | 260 |
15 |
| Sandvik Intellectual Property AB | 1484 |
15 |
| ThyssenKrupp Steel Europe AG | 955 |
13 |
| Hitachi Metals, Ltd. | 1982 |
12 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 167 |
9 |
| Kubota Corporation | 3899 |
8 |
| VDM Metals International GmbH | 105 |
8 |
| BASF SE | 20933 |
7 |
| ArcelorMittal Wire France | 42 |
7 |
| Stamicarbon B.V. | 294 |
7 |
| ThyssenKrupp AG | 3283 |
7 |
| United States Steel Corporation | 174 |
7 |
| Robert Bosch GmbH | 42689 |
6 |
| Other owners | 438 |