- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
Patent holdings for IPC class C22C 38/44
Total number of patents in this class: 3439
10-year publication summary
|
270
|
297
|
335
|
328
|
284
|
347
|
318
|
255
|
248
|
14
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6564 |
378 |
| JFE Steel Corporation | 7138 |
302 |
| POSCO Co., Ltd. | 1618 |
188 |
| ArcelorMittal | 2437 |
173 |
| POSCO | 2154 |
150 |
| Baoshan Iron & Steel Co., Ltd. | 1029 |
87 |
| NIPPON STEEL Stainless Steel Corporation | 276 |
68 |
| True Velocity IP Holdings, Inc. | 247 |
57 |
| Daido Steel Co., Ltd. | 275 |
50 |
| Hyundai Steel Company | 462 |
39 |
| Outokumpu Oyj | 263 |
39 |
| Nanjing Iron&Steel Co.,Ltd. | 174 |
33 |
| Hitachi Metals, Ltd. | 1949 |
30 |
| NTN Corporation | 4953 |
27 |
| ATI Properties LLC | 203 |
27 |
| Sandvik Intellectual Property AB | 1442 |
27 |
| ThyssenKrupp Steel Europe AG | 968 |
27 |
| Hyundai Motor Company | 23093 |
25 |
| Aubert & Duval | 113 |
23 |
| CRS Holdings, LLC | 150 |
22 |
| Other owners | 1667 |