- All sections
- B - Performing operations; transporting
- 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: 259
10-year publication summary
|
29
|
19
|
27
|
24
|
18
|
16
|
18
|
18
|
25
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5649 |
21 |
| Sumitomo Metal Industries, Ltd. | 453 |
17 |
| Hitachi Metals, Ltd. | 2175 |
14 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
12 |
| JFE Steel Corporation | 6067 |
8 |
| SMS Group GmbH | 1029 |
8 |
| Danieli & C. Officine Meccaniche S.p.A. | 680 |
7 |
| POSCO | 2222 |
7 |
| Rtx Corporation | 8674 |
5 |
| Mitsubishi-Hitachi Metals Machinery, Inc. | 61 |
4 |
| Tata Steel Ijmuiden B.V. | 283 |
4 |
| Vicon Machinery, LLC | 12 |
4 |
| ArcelorMittal | 1887 |
3 |
| Contemporary Amperex Technology Co., Limited | 5805 |
3 |
| IHI Corporation | 3268 |
3 |
| JP Steel Plantech Co. | 80 |
3 |
| Primetals Technologies Austria GmbH | 479 |
3 |
| Primetals Technologies Japan, Ltd. | 143 |
3 |
| SMS Siemag Aktiengesellschaft | 529 |
3 |
| Victaulic Company | 664 |
3 |
| Other owners | 124 |