- 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 5/30 - Regulating or controlling the blowing
Patent holdings for IPC class C21C 5/30
Total number of patents in this class: 78
10-year publication summary
|
7
|
1
|
1
|
4
|
4
|
6
|
3
|
13
|
6
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
24 |
| SMS Group GmbH | 1029 |
5 |
| SMS Siemag Aktiengesellschaft | 529 |
5 |
| ArcelorMittal | 1887 |
4 |
| Hyundai Steel Company | 310 |
4 |
| University of Science and Technology Beijing | 245 |
4 |
| Technological Resources Pty. Limited | 444 |
3 |
| Berry Metal Company | 52 |
2 |
| ISTC Co., Ltd. | 5 |
2 |
| Tallman Technologies Inc. | 4 |
2 |
| Laiwu Steel Yinshan Section Co., Ltd. | 12 |
2 |
| Siemens AG | 24990 |
1 |
| Siemens VAI Metals Technologies GmbH | 233 |
1 |
| Boliden Mineral AB | 7 |
1 |
| ESM Group Inc. | 2 |
1 |
| JP Steel Plantech Co. | 80 |
1 |
| Linde Aktiengesellschaft | 1600 |
1 |
| Magnesita Refratarios S/A | 9 |
1 |
| Midrex Technologies, Inc. | 103 |
1 |
| Mizushima Ferroalloy Co., Ltd. | 14 |
1 |
| Other owners | 12 |