- All sections
- C - Chemistrymetallurgy
- C21B - Manufacture of iron or steel
- C21B 5/06 - Making pig-iron in the blast furnace using top gas in the blast furnace process
Patent holdings for IPC class C21B 5/06
Total number of patents in this class: 275
10-year publication summary
|
6
|
4
|
8
|
5
|
8
|
21
|
25
|
29
|
18
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2517 |
39 |
| Paul Wurth S.A. | 430 |
36 |
| ThyssenKrupp AG | 3456 |
22 |
| JFE Steel Corporation | 7300 |
20 |
| Siemens VAI Metals Technologies GmbH | 209 |
10 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4046 |
9 |
| HYL Technologies, S.A. de C.V. | 43 |
8 |
| Nippon Steel Corporation | 6666 |
6 |
| Primetals Technologies Austria GmbH | 563 |
6 |
| Danieli & C. Officine Meccaniche S.p.A. | 709 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2832 |
5 |
| Dioxycle | 75 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 9004 |
4 |
| CCP Technology GmbH | 22 |
4 |
| Linde Aktiengesellschaft | 1440 |
4 |
| Midrex Technologies, Inc. | 113 |
4 |
| Sekisui Chemical Co., Ltd. | 3576 |
4 |
| 8 Rivers Capital, LLC | 238 |
3 |
| ArcelorMittal Investigacion y Desarrollo SL | 208 |
3 |
| Cisdi Engineering Co., Ltd. | 103 |
3 |
| Other owners | 75 |