- 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 7/10 - Handling in vacuum
Patent holdings for IPC class C21C 7/10
Total number of patents in this class: 382
10-year publication summary
|
13
|
13
|
17
|
20
|
19
|
36
|
33
|
33
|
46
|
25
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7589 |
62 |
| Nanjing Iron&Steel Co.,Ltd. | 186 |
25 |
| Nippon Steel Corporation | 6932 |
20 |
| Baoshan Iron & Steel Co., Ltd. | 1114 |
18 |
| Jiangsu Shagang Group Co., Ltd. | 115 |
12 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
10 |
| Bengang Steel Plates Co., Ltd. | 41 |
10 |
| ArcelorMittal | 2714 |
9 |
| Shandong Iron and Steel Company Ltd | 38 |
8 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 81 |
8 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 64 |
7 |
| Nippon Yakin Kogyo Co., Ltd. | 74 |
7 |
| Nucor Corporation | 415 |
7 |
| Laiwu Steel Yinshan Section Co., Ltd. | 25 |
7 |
| SMS Group GmbH | 1206 |
6 |
| Danieli & C. Officine Meccaniche S.p.A. | 719 |
5 |
| Institute of Metal Research Chinese Academy of Sciences | 122 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2836 |
5 |
| SMS Mevac GmbH | 15 |
5 |
| Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. | 84 |
4 |
| Other owners | 142 |