- All sections
- C - Chemistrymetallurgy
- C21B - Manufacture of iron or steel
- C21B 9/02 - Brick hot-blast stoves
Patent holdings for IPC class C21B 9/02
Total number of patents in this class: 24
10-year publication summary
|
2
|
2
|
4
|
0
|
0
|
1
|
2
|
3
|
1
|
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. | 410 |
5 |
| Nippon Steel & Sumikin Engineering Co., Ltd. | 185 |
3 |
| Paul Wurth Deutschland GmbH | 28 |
3 |
| Allied Mineral Products, Inc. | 69 |
2 |
| Fosbel, Inc. | 61 |
2 |
| NS Plant designing Corporation | 19 |
2 |
| Linde Aktiengesellschaft | 1548 |
1 |
| Paul Wurth Refractory & Engineering GmbH | 12 |
1 |
| Fsbl Acquisition, Inc. | 16 |
1 |
| Allied Mineral Products, LLC | 36 |
1 |
| Zhengzhou Annec Industrial Co., Ltd | 1 |
1 |
| Sunjin Technical Solution Ltd. | 2 |
1 |
| Brevet Concept SRL | 1 |
1 |
| Other owners | 0 |