- All sections
- B - Performing operationstransporting
- B21C - Manufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rollingauxiliary operations used in connection with metal-working without essentially removing material
- B21C 25/04 - Mandrels
Patent holdings for IPC class B21C 25/04
Total number of patents in this class: 45
10-year publication summary
|
3
|
2
|
2
|
2
|
5
|
2
|
4
|
1
|
4
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Manchester Copper Products, LLC | 16 |
8 |
| Battelle Memorial Institute | 2459 |
6 |
| Ube Machinery Corporation, Ltd. | 121 |
3 |
| EXCO Technologies Limited | 53 |
2 |
| Montebello Technology Services Ltd. | 8 |
2 |
| North University of China | 103 |
2 |
| 1949467 Ontario Inc. | 7 |
2 |
| Samsung Electronics Co., Ltd. | 143303 |
1 |
| Lockheed Martin Corporation | 3282 |
1 |
| ALCAN Technology & Management Ltd. | 54 |
1 |
| Alcoa Inc. | 296 |
1 |
| Felss Systems GmbH | 17 |
1 |
| GKN Driveline International GmbH | 163 |
1 |
| Korea Automotive Technology Institute | 82 |
1 |
| LIXIL Corporation | 689 |
1 |
| Metal Industries Research & Development Centre | 203 |
1 |
| Nikkeikin Aluminium Core Technology Company Ltd. | 58 |
1 |
| Nippon Light Metal Company, Ltd. | 659 |
1 |
| Nippon Steel Corporation | 6136 |
1 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
1 |
| Other owners | 7 |