- All sections
- B - Performing operationstransporting
- B21B - Rolling of metal
- B21B 3/02 - Rolling special iron alloys
Patent holdings for IPC class B21B 3/02
Total number of patents in this class: 267
10-year publication summary
|
16
|
15
|
33
|
17
|
22
|
18
|
11
|
16
|
16
|
10
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6809 |
70 |
| Nippon Steel Corporation | 6203 |
26 |
| POSCO | 2188 |
16 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
15 |
| POSCO Co., Ltd. | 1558 |
13 |
| ArcelorMittal | 2271 |
11 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 168 |
11 |
| Hitachi Metals, Ltd. | 1985 |
9 |
| NIPPON STEEL Stainless Steel Corporation | 287 |
7 |
| SMS Group GmbH | 1118 |
5 |
| Dai Nippon Printing Co., Ltd. | 4071 |
4 |
| Outokumpu Oyj | 261 |
4 |
| Big River Steel LLC | 28 |
3 |
| Hyundai Steel Company | 425 |
3 |
| Komatsu Seiki Kosakusho Co., Ltd. | 12 |
3 |
| Nisshin Steel Co., Ltd. | 394 |
3 |
| Nanjing Iron&Steel Co.,Ltd. | 163 |
3 |
| Aperam | 118 |
2 |
| ATI Properties LLC | 203 |
2 |
| Baoshan Iron & Steel Co., Ltd. | 959 |
2 |
| Other owners | 55 |