- 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: 59
10-year publication summary
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1
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5
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2
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6
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3
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2
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3
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2
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5
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8
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wisdri Engineering & Research Incorporation Limited | 231 |
13 |
| ArcelorMittal | 2736 |
4 |
| Danieli & C. Officine Meccaniche S.p.A. | 721 |
3 |
| SMS Group GmbH | 1207 |
2 |
| Technological Resources Pty. Limited | 442 |
2 |
| ThyssenKrupp AG | 3329 |
2 |
| Mitsubishi Heavy Industries, Ltd. | 9204 |
1 |
| Siemens VAI Metals Technologies GmbH | 202 |
1 |
| Cisdi Engineering Co., Ltd. | 108 |
1 |
| Danieli Corus BV | 25 |
1 |
| General Electric Technology GmbH | 1322 |
1 |
| Institute of Mechanics, Chinese Academy of Sciences | 21 |
1 |
| JFE Steel Corporation | 7632 |
1 |
| JP Steel Plantech Co. | 81 |
1 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2841 |
1 |
| Kobe Steel, Ltd. | 900 |
1 |
| Korea Research Institute of Chemical Technology | 1490 |
1 |
| Kurita Water Industries Ltd. | 1294 |
1 |
| Midrex Technologies, Inc. | 127 |
1 |
| Nippon Steel Corporation | 6982 |
1 |
| Other owners | 19 |