Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12427452 | Independent double-negative-pressure shale shaker | Duyu Hou, Mingjun Du, Pan Fang, Yuwen Wang | 2025-09-30 |
| 12146373 | Underbalanced drilling vibrating screen integrated with automatic drainage and vacuum chucks | Duyu Hou, Pan Fang, Mingjun Du, Yuwen Wang | 2024-11-19 |
| 11802450 | Negative pressure shale shaker integrated with negative pressure generation and gas-liquid separation | Yuwen Wang, Pan Fang, Mingjun Du, Duyu Hou | 2023-10-31 |
| 11655805 | Ultra-long stroke multi-cylinder reciprocating pump | Yuwen Wang, Pan Fang, Lei Du | 2023-05-23 |
| 10389225 | Switching power supply, primary control chip and loop compensation device thereof | Wenqing Wang | 2019-08-20 |
| 10367348 | Switch-mode power supply and control having protection from a short-circuited current sensing resistor | Wenqing Wang | 2019-07-30 |
| 9716438 | Integrated circuit that controls switch power supply and switch power supply | Wenhui Ye, Haiquan Zhang | 2017-07-25 |
| 9236074 | Multi-disk writer with individual head positioning | Michael Tiller, Barmeshwar Vikramaditya | 2016-01-12 |
| 9112407 | Quasi-resonant device and system and method for quasi-resonant control of switching power | Xiaohua Yang | 2015-08-18 |