- All sections
- C - Chemistrymetallurgy
- C21B - Manufacture of iron or steel
- C21B 11/10 - Making pig-iron other than in blast furnaces in electric furnaces
Patent holdings for IPC class C21B 11/10
Total number of patents in this class: 149
10-year publication summary
|
4
|
4
|
6
|
5
|
7
|
5
|
6
|
10
|
36
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2293 |
31 |
| JFE Steel Corporation | 6849 |
17 |
| Tenova S.p.A. | 156 |
6 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2869 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 8752 |
4 |
| Danieli & C. Officine Meccaniche S.p.A. | 717 |
4 |
| Nippon Steel Corporation | 6274 |
4 |
| Kobe Steel, Ltd. | 876 |
3 |
| Newsouth Innovations Pty Limited | 593 |
3 |
| Northeastern University | 539 |
3 |
| Paul Wurth S.A. | 418 |
3 |
| Technological Resources Pty. Limited | 455 |
3 |
| ThyssenKrupp Steel Europe AG | 956 |
3 |
| Hatch Ltd. | 214 |
2 |
| Nucor Corporation | 416 |
2 |
| China ENFI Engineering Corp. | 103 |
2 |
| African Rainbow Minerals Limited | 11 |
2 |
| Tenova Industrial Technologies (Beijing) Co., Ltd | 2 |
2 |
| Metix (Pty) Limited | 9 |
2 |
| Pathfinder Holdings Corp | 6 |
2 |
| Other owners | 46 |