Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10273657 | Variable-speed volume-control direct-drive all-electric hydraulic excavator driving and energy recovery system | Long Quan, Jiahai Huang, Bing Wu, Xiaohong Han | 2019-04-30 |
| 10047768 | Double-loop control system with single hydraulic motor | Long Quan, Youshan Gao, Jiahai Huang, Jing Yang | 2018-08-14 |