- All sections
- B - Performing operationstransporting
- B21B - Rolling of metal
- B21B 1/22 - 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 bands or sheets of indefinite length
Patent holdings for IPC class B21B 1/22
Total number of patents in this class: 789
10-year publication summary
|
76
|
70
|
67
|
57
|
64
|
56
|
56
|
69
|
63
|
47
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7549 |
123 |
| Nippon Steel Corporation | 6895 |
55 |
| ThyssenKrupp Steel Europe AG | 992 |
37 |
| Novelis Inc. | 781 |
28 |
| SMS Group GmbH | 1200 |
27 |
| Baoshan Iron & Steel Co., Ltd. | 1104 |
22 |
| Toyo Kohan Co., Ltd. | 436 |
18 |
| ArcelorMittal | 2680 |
15 |
| UACJ Corporation | 740 |
14 |
| POSCO | 2142 |
13 |
| Primetals Technologies Austria GmbH | 575 |
13 |
| Nisshin Steel Co., Ltd. | 382 |
11 |
| POSCO Co., Ltd. | 2015 |
11 |
| Hitachi Metals, Ltd. | 1896 |
10 |
| Dai Nippon Printing Co., Ltd. | 4245 |
10 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
9 |
| Outokumpu Oyj | 265 |
9 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2836 |
8 |
| Primetals Technologies Japan, Ltd. | 180 |
8 |
| Taiyuan University of Technology | 313 |
8 |
| Other owners | 340 |