- All sections
- B - Performing operationstransporting
- B23P - Metal-working not otherwise provided forcombined operationsuniversal machine tools
- B23P 15/20 - Making specific metal objects by operations not covered by a single other subclass or a group in this subclass railroad requirements, e.g. buffers
Patent holdings for IPC class B23P 15/20
Total number of patents in this class: 20
10-year publication summary
|
6
|
2
|
0
|
3
|
0
|
3
|
1
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hyperloop Technologies, Inc. | 182 |
7 |
| Hilltrac, Inc. | 9 |
2 |
| Laird Technologies, Inc. | 380 |
2 |
| Bombardier Transportation GmbH | 655 |
1 |
| Daechang Forging Co., Ltd. | 12 |
1 |
| Hyperloop Transportation Technologies, Inc. | 44 |
1 |
| Karlsruher Institut fur Technologie | 376 |
1 |
| Pandrol Limited | 93 |
1 |
| Qiqihar Railway Rolling Stock Co., Ltd. | 45 |
1 |
| Greenbrier Central, LLC | 17 |
1 |
| Dong HAE Track Co., Ltd. | 1 |
1 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 178 |
1 |
| Other owners | 0 |