- 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: 904
10-year publication summary
|
89
|
45
|
62
|
50
|
70
|
30
|
24
|
21
|
28
|
15
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7527 |
118 |
| Nippon Steel Corporation | 6871 |
86 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
86 |
| POSCO | 2143 |
72 |
| JX Nippon Mining & Metals Corporation | 1461 |
30 |
| UACJ Corporation | 734 |
28 |
| Novelis Inc. | 779 |
26 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2836 |
23 |
| Sumitomo Electric Industries, Ltd. | 16331 |
22 |
| Mitsubishi Materials Corporation | 2472 |
18 |
| The Furukawa Electric Co., Ltd. | 3694 |
14 |
| Mitsubishi Shindoh Co., Ltd. | 121 |
11 |
| Toyo Aluminium Kabushiki Kaisha | 349 |
9 |
| Constellium Issoire | 226 |
8 |
| Hyundai Steel Company | 531 |
8 |
| Nippon Light Metal Company, Ltd. | 683 |
8 |
| POSCO Co., Ltd. | 2012 |
8 |
| Baoshan Iron & Steel Co., Ltd. | 1102 |
7 |
| Constellium Neuf-brisach | 140 |
7 |
| Poongsan Corporation | 62 |
7 |
| Other owners | 308 |