- 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 5/40 - Offtakes or separating apparatus for converter waste gases or dust
Patent holdings for IPC class C21C 5/40
Total number of patents in this class: 54
10-year publication summary
|
6
|
1
|
5
|
2
|
6
|
3
|
2
|
3
|
1
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Technological Resources Pty. Limited | 451 |
5 |
| Wisdri Engineering & Research Incorporation Limited | 197 |
5 |
| ArcelorMittal | 2248 |
4 |
| Danieli & C. Officine Meccaniche S.p.A. | 710 |
2 |
| SMS Group GmbH | 1113 |
2 |
| ThyssenKrupp AG | 3271 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 8657 |
1 |
| Siemens VAI Metals Technologies GmbH | 223 |
1 |
| Cisdi Engineering Co., Ltd. | 99 |
1 |
| Danieli Corus BV | 26 |
1 |
| General Electric Technology GmbH | 1459 |
1 |
| Institute of Mechanics, Chinese Academy of Sciences | 19 |
1 |
| JFE Steel Corporation | 6794 |
1 |
| JP Steel Plantech Co. | 82 |
1 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2874 |
1 |
| Kobe Steel, Ltd. | 871 |
1 |
| Korea Research Institute of Chemical Technology | 1380 |
1 |
| Kurita Water Industries Ltd. | 1187 |
1 |
| Midrex Technologies, Inc. | 109 |
1 |
| Nippon Steel Corporation | 6181 |
1 |
| Other owners | 20 |