- All sections
- B - Performing operationstransporting
- B21B - Rolling of metal
- B21B 21/00 - Pilgrim-step tube-rolling
Patent holdings for IPC class B21B 21/00
Total number of patents in this class: 55
10-year publication summary
|
8
|
2
|
7
|
3
|
0
|
2
|
1
|
0
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sandvik Materials Technology Deutschland GmbH | 59 |
16 |
| Alleima GmbH | 28 |
8 |
| Sumitomo Metal Industries, Ltd. | 307 |
4 |
| SMS Group GmbH | 1208 |
3 |
| Sandvik Intellectual Property AB | 1388 |
2 |
| Terrapower, LLC | 362 |
2 |
| Areva NP | 200 |
1 |
| Compagnie Europeenne du Zirconium-Cezus | 1 |
1 |
| Electric Power Research Institute, Inc. | 217 |
1 |
| Formtek, Inc. | 41 |
1 |
| HOERBIGER Antriebstechnik Holding GmbH | 71 |
1 |
| IBF S.p.A. | 5 |
1 |
| KEPCO Nuclear Fuel Co., Ltd. | 149 |
1 |
| Kwantex Research Inc. | 34 |
1 |
| NHK Spring Co., Ltd. | 2004 |
1 |
| Nippon Steel Corporation | 6969 |
1 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
1 |
| Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. | 84 |
1 |
| Shinko Metal Products Co., Ltd. | 13 |
1 |
| SMS Meer GmbH | 59 |
1 |
| Other owners | 6 |