- 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 1/02 - Dephosphorising or desulfurising
Patent holdings for IPC class C21C 1/02
Total number of patents in this class: 213
10-year publication summary
|
13
|
13
|
8
|
11
|
9
|
13
|
9
|
20
|
17
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7339 |
61 |
| Nippon Steel Corporation | 6687 |
20 |
| Nippon Steel & Sumitomo Metal Corporation | 1985 |
18 |
| ArcelorMittal | 2525 |
17 |
| POSCO | 2155 |
6 |
| S.A. Lhoist Recherche et Developpement | 194 |
6 |
| Foseco International Limited | 213 |
5 |
| Nisshin Steel Co., Ltd. | 390 |
5 |
| SMS Group GmbH | 1164 |
5 |
| Almamet GmbH | 8 |
4 |
| Jamipol Limited | 7 |
4 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2839 |
3 |
| Tata Steel Nederland Technology BV | 156 |
3 |
| Technological Resources Pty. Limited | 441 |
3 |
| Jiangsu Shagang Group Co., Ltd. | 108 |
3 |
| Mexichem Fluor, Sociedad Anonima de Capital Variable | 203 |
2 |
| Paul Wurth S.A. | 430 |
2 |
| Tata Steel UK Limited | 166 |
2 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 74 |
2 |
| Zhangjiagang Yangtze River Cold Rolled Plate Co. Ltd | 18 |
2 |
| Other owners | 40 |