- 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
|
0
|
3
|
3
|
1
|
4
|
3
|
0
|
3
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hubei Tri-ring Forging Co., Ltd. | 5 |
3 |
| JFE Steel Corporation | 6557 |
2 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2906 |
2 |
| KYB Corporation | 1325 |
2 |
| UACJ Extrusion Corporation | 22 |
2 |
| Siemens Mobility Austria GmbH | 151 |
2 |
| Honda Motor Co., Ltd. | 24866 |
1 |
| ArcelorMittal Investigacion y Desarrolli, S.L. | 1 |
1 |
| Bombardier Transportation GmbH | 655 |
1 |
| CITIC Dicastal CO., LTD | 557 |
1 |
| Feintool International Holding AG | 111 |
1 |
| Hegenscheidt-MFD GmbH & Co. KG | 71 |
1 |
| Jilin University | 251 |
1 |
| Korea Institute of Machinery & Materials | 722 |
1 |
| Magna International Inc. | 1258 |
1 |
| MAGNA STEYR Fahrzeugtechnik AG & Co KG | 168 |
1 |
| NHK Spring Co., Ltd. | 1769 |
1 |
| Nippon Steel Corporation | 6012 |
1 |
| Outokumpu Nirosta GmbH | 21 |
1 |
| Rohr, Inc. | 728 |
1 |
| Other owners | 9 |