- 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: 720
10-year publication summary
|
60
|
76
|
70
|
67
|
57
|
65
|
55
|
54
|
66
|
36
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6816 |
106 |
| Nippon Steel Corporation | 6207 |
51 |
| ThyssenKrupp Steel Europe AG | 954 |
35 |
| Novelis Inc. | 744 |
28 |
| SMS Group GmbH | 1118 |
24 |
| Baoshan Iron & Steel Co., Ltd. | 959 |
18 |
| Toyo Kohan Co., Ltd. | 420 |
18 |
| UACJ Corporation | 691 |
14 |
| POSCO | 2186 |
13 |
| Primetals Technologies Austria GmbH | 531 |
12 |
| Dai Nippon Printing Co., Ltd. | 4073 |
11 |
| Nisshin Steel Co., Ltd. | 394 |
11 |
| Hitachi Metals, Ltd. | 1985 |
10 |
| ArcelorMittal | 2272 |
10 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
9 |
| Outokumpu Oyj | 261 |
9 |
| POSCO Co., Ltd. | 1559 |
9 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2876 |
8 |
| Mitsubishi Shindoh Co., Ltd. | 126 |
7 |
| Tata Steel Nederland Technology BV | 151 |
7 |
| Other owners | 310 |