- All sections
- C - Chemistry; metallurgy
- C21C - Processing of pig-iron, e.g. refining, manufacture of wrought-iron or steel; treatment in molten state of ferrous alloys
- C21C 7/064 - Dephosphorising; Desulfurising
Patent holdings for IPC class C21C 7/064
Total number of patents in this class: 193
10-year publication summary
|
15
|
10
|
11
|
15
|
11
|
13
|
18
|
15
|
20
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
23 |
| ArcelorMittal | 1887 |
11 |
| Nippon Steel Corporation | 5649 |
11 |
| Nanjing Iron&Steel Co.,Ltd. | 135 |
10 |
| Nucor Corporation | 425 |
7 |
| POSCO | 2222 |
6 |
| S.A. Lhoist Recherche et Developpement | 163 |
6 |
| University of Science and Technology Beijing | 245 |
6 |
| Nippon Yakin Kogyo Co., Ltd. | 51 |
5 |
| Almamet GmbH | 4 |
4 |
| Foseco International Limited | 204 |
4 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
4 |
| Sumitomo Metal Industries, Ltd. | 453 |
4 |
| United States Steel Corporation | 168 |
4 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
3 |
| POSCO Co., Ltd. | 1059 |
3 |
| SMS Siemag Aktiengesellschaft | 529 |
3 |
| Jiangsu Shagang Group Co., Ltd. | 52 |
3 |
| Almamet USA, Inc. | 2 |
2 |
| Angang Steel Company Limited | 16 |
2 |
| Other owners | 72 |