- All sections
- C - Chemistrymetallurgy
- 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: 57
10-year publication summary
|
3
|
4
|
4
|
1
|
2
|
0
|
3
|
5
|
6
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2293 |
5 |
| JFE Steel Corporation | 6849 |
3 |
| Midrex Technologies, Inc. | 111 |
3 |
| Tata Steel Nederland Technology BV | 151 |
3 |
| Exothermic Distribution Corporation | 2 |
2 |
| Vale S.A. | 272 |
2 |
| Subcoal International B.V. | 15 |
2 |
| Pipex Energy S.r.l. | 6 |
2 |
| Illinois Tool Works Inc. | 11478 |
1 |
| Siemens AG | 24453 |
1 |
| Lockheed Martin Corporation | 3283 |
1 |
| Barrick Gold Corporation | 53 |
1 |
| Affival | 26 |
1 |
| Almamet GmbH | 7 |
1 |
| FMW Composite Systems, Inc. | 1 |
1 |
| Harsco Technologies Corporation | 3 |
1 |
| Hatch Ltd. | 214 |
1 |
| Korea Zinc Co., Ltd. | 88 |
1 |
| Newsouth Innovations Pty Limited | 593 |
1 |
| Northeastern University | 539 |
1 |
| Other owners | 23 |