- All sections
- C - Chemistry; metallurgy
- C21B - Manufacture of iron or steel
- C21B 3/02 - General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents
Patent holdings for IPC class C21B 3/02
Total number of patents in this class: 43
10-year publication summary
|
2
|
5
|
4
|
5
|
1
|
2
|
0
|
3
|
6
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Midrex Technologies, Inc. | 103 |
3 |
| Tata Steel Nederland Technology BV | 143 |
3 |
| Exothermic Distribution Corporation | 2 |
2 |
| Subcoal International B.V. | 13 |
2 |
| Illinois Tool Works Inc. | 11152 |
1 |
| Siemens AG | 24990 |
1 |
| Lockheed Martin Corporation | 3406 |
1 |
| Barrick Gold Corporation | 73 |
1 |
| Affival | 28 |
1 |
| Almamet GmbH | 4 |
1 |
| ArcelorMittal | 1887 |
1 |
| FMW Composite Systems, Inc. | 2 |
1 |
| Harsco Technologies Corporation | 4 |
1 |
| JFE Steel Corporation | 6067 |
1 |
| Newsouth Innovations Pty Limited | 567 |
1 |
| Northeastern University | 493 |
1 |
| Nu-Iron Technology, LLC | 44 |
1 |
| Nupro Corporation | 1 |
1 |
| Outotec Oyj | 318 |
1 |
| Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. | 45 |
1 |
| Other owners | 17 |