- 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 5/38 - Removal of waste gases or dust
Patent holdings for IPC class C21C 5/38
Total number of patents in this class: 87
10-year publication summary
|
3
|
2
|
3
|
4
|
2
|
5
|
3
|
7
|
2
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ThyssenKrupp AG | 3382 |
14 |
| ArcelorMittal | 2453 |
13 |
| SMS Group GmbH | 1149 |
5 |
| Technological Resources Pty. Limited | 450 |
5 |
| Siemens VAI Metals Technologies GmbH | 210 |
3 |
| Cisdi Engineering Co., Ltd. | 100 |
3 |
| Systems Spray-Cooled, LLC | 30 |
3 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
2 |
| Danieli & C. Officine Meccaniche S.p.A. | 715 |
2 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
2 |
| Nippon Steel & Sumitomo Metal Corporation | 1985 |
2 |
| Primetals Technologies Austria GmbH | 555 |
2 |
| Tata Steel Ijmuiden B.V. | 311 |
2 |
| ThyssenKrupp Uhde GmbH | 356 |
2 |
| Dioxycle | 73 |
2 |
| Alstom Technology Ltd | 1078 |
1 |
| Astec Irie Co., Ltd. | 7 |
1 |
| CBL Industrial Services, Inc. | 5 |
1 |
| Commonwealth Scientific and Industrial Research Organisation | 1664 |
1 |
| Danieli Corus BV | 25 |
1 |
| Other owners | 20 |