- 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: 274
10-year publication summary
|
27
|
24
|
18
|
16
|
18
|
18
|
26
|
12
|
10
|
9
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6945 |
21 |
| Hitachi Metals, Ltd. | 1824 |
13 |
| Sumitomo Metal Industries, Ltd. | 309 |
13 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
12 |
| JFE Steel Corporation | 7599 |
10 |
| SMS Group GmbH | 1207 |
9 |
| Danieli & C. Officine Meccaniche S.p.A. | 719 |
7 |
| POSCO | 2142 |
7 |
| Rtx Corporation | 10141 |
6 |
| Primetals Technologies Japan, Ltd. | 182 |
5 |
| Mitsubishi-Hitachi Metals Machinery, Inc. | 49 |
4 |
| POSCO Co., Ltd. | 2025 |
4 |
| Tata Steel Ijmuiden B.V. | 328 |
4 |
| Vicon Machinery, LLC | 15 |
4 |
| Solum Advanced Materials Co., Ltd. | 18 |
4 |
| ArcelorMittal | 2720 |
3 |
| IHI Corporation | 3534 |
3 |
| Primetals Technologies Austria GmbH | 578 |
3 |
| SMS Siemag Aktiengesellschaft | 484 |
3 |
| ThyssenKrupp Steel Europe AG | 995 |
3 |
| Other owners | 136 |