- All sections
- C - Chemistrymetallurgy
- C21B - Manufacture of iron or steel
- C21B 9/10 - Other details, e.g. blast mains
Patent holdings for IPC class C21B 9/10
Total number of patents in this class: 39
10-year publication summary
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0
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4
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0
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2
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2
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1
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2
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0
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Paul Wurth S.A. | 430 |
5 |
| Nippon Steel & Sumikin Engineering Co., Ltd. | 169 |
3 |
| Paul Wurth Deutschland GmbH | 25 |
3 |
| Allied Mineral Products, Inc. | 55 |
2 |
| JFE Steel Corporation | 7617 |
2 |
| Linde Aktiengesellschaft | 1415 |
2 |
| NS Plant designing Corporation | 19 |
2 |
| Paul Wurth Refractory & Engineering GmbH | 12 |
2 |
| Primetals Technologies, Limited | 34 |
2 |
| Siemens Plc | 70 |
1 |
| Hatch Ltd. | 218 |
1 |
| Hyundai Steel Company | 546 |
1 |
| Nippon Steel Engineering Co., Ltd. | 180 |
1 |
| POSCO | 2143 |
1 |
| POSCO Engineering & Construction Co., Ltd. | 33 |
1 |
| Praxair Technology, Inc. | 1214 |
1 |
| Refractory Intellectual Property GmbH & Co. KG | 568 |
1 |
| Research Institute of Industrial Science & Technology | 570 |
1 |
| SMS CONCAST ITALIA S.p.A. | 9 |
1 |
| Excello Co., Ltd. | 10 |
1 |
| Other owners | 5 |