- All sections
- C - Chemistrymetallurgy
- C21C - Processing of pig-iron, e.g. refining, manufacture of wrought-iron or steeltreatment in molten state of ferrous alloys
- C21C 7/072 - Treatment with gases
Patent holdings for IPC class C21C 7/072
Total number of patents in this class: 181
10-year publication summary
|
5
|
13
|
9
|
6
|
10
|
16
|
29
|
9
|
22
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6767 |
27 |
| ArcelorMittal | 2227 |
9 |
| Refractory Intellectual Property GmbH & Co. KG | 537 |
8 |
| Laiwu Steel Yinshan Section Co., Ltd. | 21 |
6 |
| Foseco International Limited | 212 |
5 |
| SMS Group GmbH | 1114 |
5 |
| TDK Corporation | 6674 |
4 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
4 |
| Nippon Yakin Kogyo Co., Ltd. | 62 |
4 |
| Southwire Company, LLC | 779 |
4 |
| Krosakiharima Corporation | 282 |
3 |
| Nippon Steel Corporation | 6166 |
3 |
| POSCO | 2189 |
3 |
| Soochow University | 1731 |
3 |
| Sumitomo Metal Industries, Ltd. | 387 |
3 |
| University of Science and Technology Beijing | 277 |
3 |
| Jiangsu Shagang Group Co., Ltd. | 88 |
3 |
| A. Finkl & Sons Co. | 84 |
2 |
| Danieli & C. Officine Meccaniche S.p.A. | 709 |
2 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 61 |
2 |
| Other owners | 78 |