- 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 23/21 - Presses specially adapted for extruding metal
Patent holdings for IPC class B21C 23/21
Total number of patents in this class: 162
10-year publication summary
|
15
|
12
|
15
|
6
|
17
|
10
|
10
|
9
|
11
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Battelle Memorial Institute | 2491 |
18 |
| Ube Machinery Corporation, Ltd. | 121 |
16 |
| SMS Group GmbH | 1127 |
14 |
| Danieli & C. Officine Meccaniche S.p.A. | 717 |
11 |
| SMS Meer GmbH | 65 |
9 |
| Manchester Copper Products, LLC | 16 |
8 |
| American Axle & Manufacturing, Inc. | 650 |
6 |
| EXCO Technologies Limited | 54 |
5 |
| ASMAG-Holding GmbH | 46 |
3 |
| BIOTRONIK AG | 422 |
3 |
| The Electric Materials Company | 5 |
3 |
| Magna International Inc. | 1231 |
3 |
| Constellium Issoire | 218 |
2 |
| GrafTech International Holdings Inc. | 112 |
2 |
| Moog GmbH | 49 |
2 |
| National Machinery LLC | 42 |
2 |
| Norsk Hydro ASA | 257 |
2 |
| Sandvik Intellectual Property AB | 1485 |
2 |
| Technische Universitat Berlin | 354 |
2 |
| Toyota Motor Corporation | 32331 |
1 |
| Other owners | 48 |