- All sections
- B - Performing operations; transporting
- B21B - Rolling of metal
- B21B 1/28 - 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 in a continuous process by cold-rolling
Patent holdings for IPC class B21B 1/28
Total number of patents in this class: 63
10-year publication summary
|
9
|
6
|
5
|
4
|
6
|
4
|
3
|
9
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
12 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
3 |
| Nippon Steel Corporation | 5649 |
3 |
| SMS Group GmbH | 1029 |
3 |
| Outokumpu Nirosta GmbH | 21 |
2 |
| Outokumpu Oyj | 250 |
2 |
| Primetals Technologies Germany GmbH | 180 |
2 |
| Primetals Technologies Japan, Ltd. | 143 |
2 |
| Tata Steel Ijmuiden B.V. | 283 |
2 |
| ThyssenKrupp Steel Europe AG | 924 |
2 |
| Compagnie Generale des Etablissements Michelin | 4450 |
2 |
| Jiangsu Yongjin Metal Technology Co., Ltd | 10 |
2 |
| Hitachi Metals, Ltd. | 2175 |
1 |
| Siemens VAI Metals Technologies GmbH | 233 |
1 |
| ArcelorMittal France | 102 |
1 |
| Bank of America, National Association | 3 |
1 |
| Danieli & C. Officine Meccaniche S.p.A. | 680 |
1 |
| Energetics Technologies, L.L.C. | 7 |
1 |
| Girnet Internacional, S.L. | 64 |
1 |
| Keystone Tower Systems, Inc. | 46 |
1 |
| Other owners | 18 |