- All sections
- B - Performing operationstransporting
- B21B - Rolling of metal
- B21B 1/38 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets
Patent holdings for IPC class B21B 1/38
Total number of patents in this class: 234
10-year publication summary
|
12
|
17
|
18
|
30
|
14
|
18
|
13
|
19
|
17
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6827 |
29 |
| Baoshan Iron & Steel Co., Ltd. | 961 |
15 |
| Nippon Steel Corporation | 6220 |
15 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
8 |
| Taiyuan University of Technology | 254 |
8 |
| ThyssenKrupp Steel Europe AG | 954 |
8 |
| SMS Group GmbH | 1119 |
6 |
| ThyssenKrupp AG | 3280 |
6 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 168 |
5 |
| Wickeder Westfalenstahl GmbH | 28 |
5 |
| Nanjing Iron&Steel Co.,Ltd. | 163 |
5 |
| Jiangsu Shagang Group Co., Ltd. | 90 |
4 |
| Jiangsu Kangrui New Material Technology Co., Ltd. | 30 |
4 |
| Hitachi Metals, Ltd. | 1983 |
3 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2873 |
3 |
| POSCO | 2187 |
3 |
| Sumitomo Metal Industries, Ltd. | 383 |
3 |
| Taiyuan University of Science and Technology | 42 |
3 |
| Guasta, Fabrizio | 3 |
3 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 64 |
3 |
| Other owners | 95 |