- 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: 44
10-year publication summary
|
2
|
2
|
2
|
5
|
2
|
4
|
1
|
4
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Manchester Copper Products, LLC | 15 |
8 |
| Battelle Memorial Institute | 2608 |
5 |
| Ube Machinery Corporation, Ltd. | 118 |
3 |
| EXCO Technologies Limited | 54 |
2 |
| Montebello Technology Services Ltd. | 6 |
2 |
| North University of China | 142 |
2 |
| 1949467 Ontario Inc. | 7 |
2 |
| Samsung Electronics Co., Ltd. | 158605 |
1 |
| Lockheed Martin Corporation | 3254 |
1 |
| The Regents of the University of Michigan | 5023 |
1 |
| Alcoa Inc. | 251 |
1 |
| Felss Systems GmbH | 24 |
1 |
| GKN Driveline International GmbH | 147 |
1 |
| Korea Automotive Technology Institute | 87 |
1 |
| LIXIL Corporation | 778 |
1 |
| Metal Industries Research & Development Centre | 243 |
1 |
| Nikkeikin Aluminium Core Technology Company Ltd. | 55 |
1 |
| Nippon Light Metal Company, Ltd. | 685 |
1 |
| Nippon Steel Corporation | 6945 |
1 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
1 |
| Other owners | 7 |