- 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 5/32 - Blowing from above
Patent holdings for IPC class C21C 5/32
Total number of patents in this class: 54
10-year publication summary
|
3
|
2
|
2
|
3
|
5
|
4
|
9
|
2
|
4
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6708 |
14 |
| ArcelorMittal | 2144 |
6 |
| SMS Group GmbH | 1102 |
5 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3899 |
3 |
| SMS Siemag Aktiengesellschaft | 507 |
3 |
| Shandong Molong Petroleum Machinery Co., Ltd. | 20 |
3 |
| University of Science and Technology Beijing | 278 |
2 |
| Vesuvius Refratarios Ltda | 9 |
2 |
| Siemens VAI Metals Technologies GmbH | 223 |
1 |
| Berry Metal Company | 52 |
1 |
| The BOC Group plc | 15 |
1 |
| Magnesita Refratarios S/A | 9 |
1 |
| Nippon Steel Corporation | 6122 |
1 |
| POSCO Co., Ltd. | 1374 |
1 |
| Tenova Goodfellow Inc. | 43 |
1 |
| Vesuvius Group S.A. | 88 |
1 |
| Soudobeam SA | 6 |
1 |
| M.K.N. Technologies GmbH | 1 |
1 |
| Messer Industries USA, Inc. | 117 |
1 |
| Hebei Wenfeng Steel and Iron Co., Ltd. | 6 |
1 |
| Other owners | 4 |