- 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: 43
10-year publication summary
|
1
|
0
|
4
|
0
|
2
|
2
|
1
|
2
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Paul Wurth S.A. | 419 |
7 |
| Nippon Steel & Sumikin Engineering Co., Ltd. | 184 |
3 |
| Paul Wurth Deutschland GmbH | 24 |
3 |
| Allied Mineral Products, Inc. | 63 |
2 |
| JFE Steel Corporation | 6827 |
2 |
| Linde Aktiengesellschaft | 1516 |
2 |
| NS Plant designing Corporation | 19 |
2 |
| Paul Wurth Refractory & Engineering GmbH | 12 |
2 |
| Primetals Technologies, Limited | 32 |
2 |
| Paul Wurth Deutschland GmbH | 2 |
2 |
| Siemens Plc | 71 |
1 |
| Hatch Ltd. | 213 |
1 |
| Hyundai Steel Company | 426 |
1 |
| Nippon Steel Engineering Co., Ltd. | 205 |
1 |
| POSCO | 2187 |
1 |
| POSCO Engineering & Construction Co., Ltd. | 34 |
1 |
| Praxair Technology, Inc. | 1302 |
1 |
| Refractory Intellectual Property GmbH & Co. KG | 539 |
1 |
| Research Institute of Industrial Science & Technology | 502 |
1 |
| SMS CONCAST ITALIA S.p.A. | 9 |
1 |
| Other owners | 6 |