- All sections
- C - Chemistrymetallurgy
- C21B - Manufacture of iron or steel
- C21B 11/06 - Making pig-iron other than in blast furnaces in rotary kilns
Patent holdings for IPC class C21B 11/06
Total number of patents in this class: 9
10-year publication summary
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0
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2
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1
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0
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0
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0
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0
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0
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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hoffman & Sons Technologies, LLC | 3 |
2 |
| Nippon Steel Corporation | 6238 |
2 |
| Nu-Iron Technology, LLC | 33 |
1 |
| Outotec Oyj | 278 |
1 |
| POSCO | 2186 |
1 |
| Innova Powders, LLC | 2 |
1 |
| Environment and Energy Research and Development LLC. | 1 |
1 |
| Other owners | 0 |