- All sections
- C - Chemistrymetallurgy
- C21B - Manufacture of iron or steel
- C21B 7/04 - Blast furnaces with special refractories
Patent holdings for IPC class C21B 7/04
Total number of patents in this class: 16
10-year publication summary
|
1
|
0
|
4
|
0
|
2
|
0
|
0
|
0
|
0
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| POSCO | 2147 |
2 |
| Refractory Intellectual Property GmbH & Co. KG | 564 |
2 |
| Caterpillar Inc. | 10272 |
1 |
| Siemens VAI Metals Technologies GmbH | 204 |
1 |
| ATI Properties LLC | 200 |
1 |
| Harbisonwalker International, Inc. | 245 |
1 |
| Harsco Metals Group Limited | 9 |
1 |
| Novelis Inc. | 779 |
1 |
| Seoul Engineering Co., Ltd. | 8 |
1 |
| Showa Denko Carbon Germany GmbH | 13 |
1 |
| Excello Co., Ltd. | 10 |
1 |
| Seung Jae Park | 3 |
1 |
| Rewell Refractory Zhengzhou Co., Ltd | 2 |
1 |
| Yazici Ticaret-orhun Yazici | 2 |
1 |
| Other owners | 0 |