- All sections
- B - Performing operationstransporting
- B21B - Rolling of metal
- B21B 28/04 - Maintaining rolls in effective condition, e.g. reconditioning while in use, e.g. polishing
Patent holdings for IPC class B21B 28/04
Total number of patents in this class: 36
10-year publication summary
|
3
|
6
|
5
|
0
|
0
|
0
|
0
|
3
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| SSAB Enterprises, LLC | 18 |
6 |
| The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. | 382 |
3 |
| Hydro Aluminium Rolled Products GmbH | 113 |
2 |
| Novelis Inc. | 780 |
2 |
| SMS Siemag Aktiengesellschaft | 486 |
2 |
| Sumitomo Metal Industries, Ltd. | 315 |
2 |
| Siemens Plc | 70 |
1 |
| Contemporary Amperex Technology Co., Limited | 10065 |
1 |
| Danieli & C. Officine Meccaniche S.p.A. | 721 |
1 |
| JFE Steel Corporation | 7562 |
1 |
| Mitsubishi-Hitachi Metals Machinery, Inc. | 49 |
1 |
| Nippon Steel Corporation | 6911 |
1 |
| Nippon Steel & Sumikin Engineering Co., Ltd. | 169 |
1 |
| NS Plant designing Corporation | 19 |
1 |
| Primetals Technologies Japan, Ltd. | 182 |
1 |
| SMS Group GmbH | 1203 |
1 |
| ThyssenKrupp AG | 3399 |
1 |
| ThyssenKrupp Steel Europe AG | 993 |
1 |
| Pearson Incorporated | 28 |
1 |
| Nitto Belgium NV | 25 |
1 |
| Other owners | 5 |