- All sections
- B - Performing operationstransporting
- B21K - Making forged or pressed metal products, e.g. horse-shoes, rivets, bolts or wheels
- B21K 7/12 - Making railway appurtenancesMaking vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
Patent holdings for IPC class B21K 7/12
Total number of patents in this class: 36
10-year publication summary
|
3
|
3
|
1
|
4
|
3
|
0
|
3
|
1
|
1
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hubei Tri-ring Forging Co., Ltd. | 5 |
3 |
| JFE Steel Corporation | 7599 |
2 |
| KYB Corporation | 1433 |
2 |
| UACJ Extrusion Corporation | 20 |
2 |
| Siemens Mobility Austria GmbH | 192 |
2 |
| Honda Motor Co., Ltd. | 26154 |
1 |
| ArcelorMittal Investigacion y Desarrolli, S.L. | 1 |
1 |
| Aubert & Duval | 109 |
1 |
| Bombardier Transportation GmbH | 569 |
1 |
| CITIC Dicastal CO., LTD | 568 |
1 |
| Feintool International Holding AG | 96 |
1 |
| Hegenscheidt-MFD GmbH & Co. KG | 67 |
1 |
| Jilin University | 300 |
1 |
| Korea Institute of Machinery & Materials | 799 |
1 |
| Magna International Inc. | 1175 |
1 |
| MAGNA STEYR Fahrzeugtechnik AG & Co KG | 144 |
1 |
| NHK Spring Co., Ltd. | 1994 |
1 |
| Nippon Steel Corporation | 6945 |
1 |
| Outokumpu Nirosta GmbH | 18 |
1 |
| Rohr, Inc. | 773 |
1 |
| Other owners | 10 |