- All sections
- B - Performing operationstransporting
- B66D - Capstanswinchestackles, e.g. pulley blockshoists
- B66D 5/28 - Operating devices pneumatic or hydraulic specially adapted for winding gear, e.g. in mining hoists
Patent holdings for IPC class B66D 5/28
Total number of patents in this class: 16
10-year publication summary
|
2
|
1
|
1
|
0
|
2
|
2
|
0
|
1
|
1
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mhwirth GmbH | 55 |
3 |
| Taiyuan University of Technology | 297 |
2 |
| Honda Motor Co., Ltd. | 25871 |
1 |
| China University of Mining and Technology | 1292 |
1 |
| Inventio AG | 2387 |
1 |
| Kobelco Construction Machinery Co., Ltd. | 1188 |
1 |
| M.A.T. Malmedie Antriebstechnik GmbH | 16 |
1 |
| Nabors Drilling Technologies USA, Inc. | 572 |
1 |
| PINTSCH Bubenzer GmbH | 16 |
1 |
| Serinpet Ltda. Representaciones y Servicios de Petroleos | 10 |
1 |
| Zoomlion Heavy Industry Science and Technology Co., Ltd. | 398 |
1 |
| Hunan Bobang Heavy Industry Co., Ltd. | 1 |
1 |
| Guiyang Plateau Mining Machinery Company Limited | 1 |
1 |
| Other owners | 0 |