- 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 5/34 - Blowing through the bath
Patent holdings for IPC class C21C 5/34
Total number of patents in this class: 36
10-year publication summary
|
3
|
1
|
3
|
0
|
4
|
4
|
3
|
0
|
2
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Refractory Intellectual Property GmbH & Co. KG | 569 |
6 |
| SMS Group GmbH | 1207 |
3 |
| Air Products and Chemicals, Inc. | 1474 |
2 |
| ATI Properties LLC | 201 |
2 |
| JFE Steel Corporation | 7632 |
2 |
| Outotec (Finland) Oy | 455 |
2 |
| Soochow University | 1788 |
2 |
| Siemens VAI Metals Technologies GmbH | 202 |
1 |
| ArcelorMittal | 2736 |
1 |
| ArcelorMittal France | 68 |
1 |
| Baoshan Iron & Steel Co., Ltd. | 1128 |
1 |
| Berry Metal Company | 50 |
1 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
1 |
| Shinagawa Refractories Co., Ltd. | 50 |
1 |
| SMS Siemag Aktiengesellschaft | 483 |
1 |
| Techcom GmbH | 8 |
1 |
| University of Science and Technology Beijing | 316 |
1 |
| Shandong Iron and Steel Company Ltd | 38 |
1 |
| Nanjing Iron&Steel Co.,Ltd. | 188 |
1 |
| Metso Outotec Finland Oy | 171 |
1 |
| Other owners | 4 |