- 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 25/08 - Dies or mandrels with section variable during extruding, e. g for making tapered workControlling variation
Patent holdings for IPC class B21C 25/08
Total number of patents in this class: 48
10-year publication summary
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3
|
4
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3
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4
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5
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3
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2
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2
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2
|
1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sango Co., Ltd. | 70 |
5 |
| American Axle & Manufacturing, Inc. | 650 |
4 |
| Gangneung-Wonju National University Industry Academy Cooperation Group | 70 |
4 |
| Manchester Copper Products, LLC | 16 |
4 |
| North University of China | 116 |
3 |
| U.S. Manufacturing Corporation | 8 |
3 |
| GM Global Technology Operations LLC | 15020 |
2 |
| Imperial College Innovations Limited | 583 |
2 |
| Montebello Technology Services Ltd. | 8 |
2 |
| 1949467 Ontario Inc. | 7 |
2 |
| DMC Power, Inc. | 15 |
1 |
| Hefei Hualing Co., Ltd. | 487 |
1 |
| Hefei Midea Refrigerator Co., Ltd. | 443 |
1 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2875 |
1 |
| Metal Industries Research & Development Centre | 222 |
1 |
| Midea Group Co., Ltd. | 4542 |
1 |
| MTU Aero Engines AG | 675 |
1 |
| Nippon Light Metal Company, Ltd. | 664 |
1 |
| Nippon Steel Corporation | 6231 |
1 |
| Sieber Forming Solutions GmbH | 7 |
1 |
| Other owners | 7 |