- All sections
- B - Performing operationstransporting
- B21B - Rolling of metal
- B21B 27/02 - Shape or construction of rolls
Patent holdings for IPC class B21B 27/02
Total number of patents in this class: 270
10-year publication summary
|
16
|
27
|
23
|
17
|
16
|
17
|
17
|
24
|
13
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6365 |
21 |
| Sumitomo Metal Industries, Ltd. | 366 |
15 |
| Hitachi Metals, Ltd. | 1971 |
13 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
12 |
| SMS Group GmbH | 1134 |
9 |
| JFE Steel Corporation | 6965 |
8 |
| Danieli & C. Officine Meccaniche S.p.A. | 716 |
7 |
| POSCO | 2181 |
7 |
| Rtx Corporation | 9461 |
6 |
| Mitsubishi-Hitachi Metals Machinery, Inc. | 55 |
4 |
| Primetals Technologies Japan, Ltd. | 167 |
4 |
| Tata Steel Ijmuiden B.V. | 311 |
4 |
| Vicon Machinery, LLC | 15 |
4 |
| ArcelorMittal | 2328 |
3 |
| IHI Corporation | 3452 |
3 |
| JP Steel Plantech Co. | 83 |
3 |
| Primetals Technologies Austria GmbH | 544 |
3 |
| SMS Siemag Aktiengesellschaft | 505 |
3 |
| ThyssenKrupp Steel Europe AG | 958 |
3 |
| Victaulic Company | 614 |
3 |
| Other owners | 135 |