- All sections
- B - Performing operationstransporting
- B21B - Rolling of metal
- B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
Patent holdings for IPC class B21B 3/00
Total number of patents in this class: 900
10-year publication summary
|
56
|
85
|
41
|
58
|
49
|
67
|
27
|
23
|
21
|
19
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6974 |
121 |
| Nippon Steel Corporation | 6396 |
91 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
86 |
| POSCO | 2179 |
72 |
| JX Nippon Mining & Metals Corporation | 1483 |
30 |
| UACJ Corporation | 705 |
28 |
| Novelis Inc. | 763 |
26 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2879 |
24 |
| Sumitomo Electric Industries, Ltd. | 15659 |
22 |
| Mitsubishi Materials Corporation | 2470 |
18 |
| The Furukawa Electric Co., Ltd. | 3702 |
14 |
| Mitsubishi Shindoh Co., Ltd. | 126 |
11 |
| Constellium Issoire | 219 |
9 |
| Nippon Light Metal Company, Ltd. | 672 |
9 |
| Toyo Aluminium Kabushiki Kaisha | 351 |
9 |
| Hyundai Steel Company | 443 |
8 |
| POSCO Co., Ltd. | 1573 |
8 |
| Poongsan Corporation | 60 |
7 |
| Toho Titanium Co., Ltd. | 253 |
7 |
| Baoshan Iron & Steel Co., Ltd. | 968 |
6 |
| Other owners | 294 |