- 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 5/54 - Processes yielding slags of special composition
Patent holdings for IPC class C21C 5/54
Total number of patents in this class: 89
10-year publication summary
|
2
|
6
|
1
|
10
|
2
|
13
|
5
|
9
|
9
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2541 |
10 |
| Tata Steel Limited | 162 |
5 |
| ThyssenKrupp Steel Europe AG | 984 |
5 |
| JFE Steel Corporation | 7370 |
4 |
| SMS Siemag Aktiengesellschaft | 490 |
4 |
| Hyundai Steel Company | 503 |
3 |
| Nippon Steel Corporation | 6701 |
3 |
| S.A. Lhoist Recherche et Developpement | 196 |
3 |
| Cambridge Enterprise Limited | 1227 |
2 |
| Danieli & C. Officine Meccaniche S.p.A. | 713 |
2 |
| Ecomaister Co., Ltd. | 14 |
2 |
| Nippon Yakin Kogyo Co., Ltd. | 69 |
2 |
| Recoval Belgium | 13 |
2 |
| SMS Group GmbH | 1170 |
2 |
| Ternium Mexico S.A. de C.V. | 18 |
2 |
| Vallourec Soluções Tubulares do Brasil S.A. | 9 |
2 |
| Orbix Solutions | 8 |
2 |
| Saudi Iron and Steel Company (hadeed) | 12 |
2 |
| Pipex Italia S.p.A. | 4 |
2 |
| General Electric Company | 13808 |
1 |
| Other owners | 29 |