- All sections
- B - Performing operations; transporting
- B21B - Rolling of metal
- B21B 1/22 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession 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: 696
10-year publication summary
|
60
|
76
|
70
|
67
|
56
|
65
|
54
|
54
|
66
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6538 |
100 |
| Nippon Steel Corporation | 5991 |
48 |
| ThyssenKrupp Steel Europe AG | 956 |
35 |
| Novelis Inc. | 704 |
27 |
| SMS Group GmbH | 1078 |
23 |
| Toyo Kohan Co., Ltd. | 410 |
18 |
| Baoshan Iron & Steel Co., Ltd. | 890 |
17 |
| POSCO | 2204 |
13 |
| UACJ Corporation | 666 |
13 |
| Primetals Technologies Austria GmbH | 509 |
12 |
| Nisshin Steel Co., Ltd. | 398 |
11 |
| Hitachi Metals, Ltd. | 2026 |
10 |
| ArcelorMittal | 2052 |
10 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
9 |
| Outokumpu Oyj | 251 |
9 |
| Dai Nippon Printing Co., Ltd. | 3970 |
8 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2905 |
8 |
| Mitsubishi Shindoh Co., Ltd. | 130 |
7 |
| POSCO Co., Ltd. | 1293 |
7 |
| Tata Steel Nederland Technology BV | 144 |
7 |
| Other owners | 304 |