- 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 5/35 - Blowing from above and through the bath
Patent holdings for IPC class C21C 5/35
Total number of patents in this class: 57
10-year publication summary
|
4
|
2
|
5
|
3
|
2
|
2
|
6
|
2
|
8
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6580 |
11 |
| SMS Group GmbH | 1080 |
5 |
| SMS Siemag Aktiengesellschaft | 514 |
5 |
| Refractory Intellectual Property GmbH & Co. KG | 526 |
4 |
| Technological Resources Pty. Limited | 445 |
4 |
| Primetals Technologies Austria GmbH | 512 |
3 |
| University of Science and Technology Beijing | 271 |
3 |
| Baoshan Iron & Steel Co., Ltd. | 900 |
2 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
2 |
| Air Products and Chemicals, Inc. | 1436 |
1 |
| Berry Metal Company | 52 |
1 |
| Kobe Steel, Ltd. | 863 |
1 |
| Nippon Steel Corporation | 6018 |
1 |
| Northeastern University | 522 |
1 |
| Outotec (Finland) Oy | 489 |
1 |
| Outotec Oyj | 299 |
1 |
| SMS Demag AG | 129 |
1 |
| Tata Steel Nederland Technology BV | 148 |
1 |
| Techcom GmbH | 9 |
1 |
| ThyssenKrupp Steel Europe AG | 956 |
1 |
| Other owners | 7 |