- 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 5/30 - Regulating or controlling the blowing
Patent holdings for IPC class C21C 5/30
Total number of patents in this class: 92
10-year publication summary
|
1
|
4
|
4
|
6
|
3
|
13
|
6
|
8
|
6
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7599 |
29 |
| University of Science and Technology Beijing | 314 |
6 |
| ArcelorMittal | 2720 |
5 |
| SMS Group GmbH | 1207 |
5 |
| Hyundai Steel Company | 542 |
4 |
| SMS Siemag Aktiengesellschaft | 484 |
4 |
| Laiwu Steel Yinshan Section Co., Ltd. | 25 |
4 |
| Berry Metal Company | 50 |
2 |
| ISTC Co., Ltd. | 5 |
2 |
| Primetals Technologies Austria GmbH | 578 |
2 |
| Tallman Technologies Inc. | 10 |
2 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 82 |
2 |
| Siemens AG | 23983 |
1 |
| Siemens VAI Metals Technologies GmbH | 204 |
1 |
| Boliden Mineral AB | 7 |
1 |
| ESM Group Inc. | 2 |
1 |
| JP Steel Plantech Co. | 81 |
1 |
| Linde Aktiengesellschaft | 1416 |
1 |
| Magnesita Refratarios S/A | 9 |
1 |
| Midrex Technologies, Inc. | 126 |
1 |
| Other owners | 17 |