- All sections
- B - Performing operationstransporting
- B61G - Couplings specially adapted for railway vehiclesdraught or buffing appliances specially adapted for railway vehicles
- B61G 11/12 - Buffers with fluid springs or shock-absorbersCombinations thereof
Patent holdings for IPC class B61G 11/12
Total number of patents in this class: 21
10-year publication summary
|
2
|
0
|
1
|
1
|
1
|
3
|
4
|
2
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dellner Couplers AB | 103 |
4 |
| Shandong University of Science and Technology | 505 |
3 |
| Amsted Rail Company, Inc. | 435 |
2 |
| The Japan Steel Works, Ltd. | 706 |
2 |
| Central South University | 409 |
1 |
| CRRC Qingdao Sifang Co., Ltd. | 376 |
1 |
| Miner Enterprises, Inc. | 107 |
1 |
| Southwest Jiaotong University | 147 |
1 |
| Taiyuan University of Technology | 234 |
1 |
| Voith Patent GmbH | 2746 |
1 |
| CRRC Qishuyan Institute Co., Ltd. | 54 |
1 |
| Faiveley Transport Schwab AG | 3 |
1 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3028 |
1 |
| CRRC Changzhou Tech-mark Industrial Co., Ltd. | 23 |
1 |
| Other owners | 0 |