- 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: 60
10-year publication summary
|
2
|
5
|
3
|
2
|
2
|
6
|
2
|
11
|
4
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7660 |
11 |
| Refractory Intellectual Property GmbH & Co. KG | 571 |
7 |
| SMS Group GmbH | 1212 |
5 |
| Primetals Technologies Austria GmbH | 579 |
3 |
| SMS Siemag Aktiengesellschaft | 483 |
3 |
| University of Science and Technology Beijing | 316 |
3 |
| Baoshan Iron & Steel Co., Ltd. | 1134 |
2 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
2 |
| Jiangsu Shagang Group Co., Ltd. | 117 |
2 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 83 |
2 |
| Jiangsu Shagang Steel Co., Ltd. | 33 |
2 |
| Air Products and Chemicals, Inc. | 1474 |
1 |
| Berry Metal Company | 50 |
1 |
| Kobe Steel, Ltd. | 899 |
1 |
| Nippon Steel Corporation | 7050 |
1 |
| Northeastern University | 579 |
1 |
| Outotec (Finland) Oy | 455 |
1 |
| Outotec Oyj | 233 |
1 |
| Tata Steel Nederland Technology BV | 163 |
1 |
| Techcom GmbH | 8 |
1 |
| Other owners | 9 |