- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/52 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
Patent holdings for IPC class C22C 38/52
Total number of patents in this class: 857
10-year publication summary
|
66
|
65
|
95
|
78
|
84
|
68
|
72
|
59
|
89
|
44
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6895 |
117 |
| JFE Steel Corporation | 7549 |
94 |
| POSCO Co., Ltd. | 2015 |
38 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
31 |
| Daido Steel Co., Ltd. | 284 |
21 |
| Hitachi Metals, Ltd. | 1896 |
18 |
| ATI Properties LLC | 200 |
18 |
| Aubert & Duval | 110 |
16 |
| Aperam | 138 |
14 |
| CRS Holdings, LLC | 148 |
14 |
| L.E. Jones Company, LLC | 21 |
11 |
| ArcelorMittal | 2680 |
10 |
| QuesTek Innovations LLC | 61 |
9 |
| POSCO | 2142 |
8 |
| VDM Metals International GmbH | 105 |
8 |
| voestalpine Böhler Edelstahl GmbH & Co KG | 65 |
8 |
| CRS Holdings, Inc. | 29 |
7 |
| Uddeholms Aktiebolag | 205 |
7 |
| GE Infrastructure Technology, LLC | 6165 |
7 |
| Hyundai Motor Company | 24703 |
6 |
| Other owners | 395 |