Inventor
QINGLIANG ZENG
Inventor
CN
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
E21Dprimary
E21DShafts22%
F16KValves22%
B61GCouplings11%
E21FSafety devices, transport, filling-up, rescue, ventilation, or draining in or of mines or tunnels11%
F15BSystems acting by means of fluids in general11%
F16FSprings11%
H02KDynamo-electric machines11%
PatentTitleYear
12,352,169Hydraulic support with quick response function for coal wall spalling202512,044,322Large-volume liquid fixed-ratio multi-batch mixing valve202411,535,284Anti-impact device and working method thereof202211,480,263Magnetically controlled material-based magnetorheological pilot operated safety valve for hydraulic support, and applications of the same2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2025Patents assigned to UNIV SHANDONG SCIENCE & TECH (4)· patent assignee history
2022–2025Based in CN· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| UNIV SHANDONG SCIENCE & TECH | 4 | 2022–2025 |
Locations
| Location | Patents | Span |
|---|---|---|
| CN | 4 | 2022–2025 |