- All sections
- C - Chemistrymetallurgy
- C21C - Processing of pig-iron, e.g. refining, manufacture of wrought-iron or steeltreatment in molten state of ferrous alloys
- C21C 7/064 - DephosphorisingDesulfurising
Patent holdings for IPC class C21C 7/064
Total number of patents in this class: 210
10-year publication summary
|
10
|
11
|
15
|
11
|
13
|
18
|
15
|
20
|
28
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6580 |
26 |
| ArcelorMittal | 2072 |
14 |
| Nanjing Iron&Steel Co.,Ltd. | 153 |
11 |
| Nippon Steel Corporation | 6018 |
9 |
| University of Science and Technology Beijing | 271 |
8 |
| Nucor Corporation | 421 |
7 |
| S.A. Lhoist Recherche et Developpement | 168 |
7 |
| Nippon Yakin Kogyo Co., Ltd. | 57 |
6 |
| POSCO | 2204 |
6 |
| Almamet GmbH | 5 |
4 |
| Baoshan Iron & Steel Co., Ltd. | 900 |
4 |
| Foseco International Limited | 216 |
4 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
4 |
| Sumitomo Metal Industries, Ltd. | 419 |
4 |
| United States Steel Corporation | 173 |
4 |
| POSCO Co., Ltd. | 1308 |
3 |
| SMS Group GmbH | 1080 |
3 |
| SMS Siemag Aktiengesellschaft | 514 |
3 |
| Jiangsu Shagang Group Co., Ltd. | 68 |
3 |
| Almamet USA, Inc. | 2 |
2 |
| Other owners | 78 |