Inventor

DU QINGYONG

CN5 patents

⚠️ This page may combine multiple inventors who share the name “DU QINGYONG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

UNIV CHINA MINING

2 patents

US10988347B2Apr 27, 2021

Large-tonnage coal dropping buffer skip for mine

UNIV CHINA MINING0 citations60

US9914618B2Mar 13, 2018

Method and device for monitoring tension equalization and displacement adjustment states of steel wire ropes of multi-rope hoister

UNIV CHINA MINING1 citations50

UNIV CHINA MINING & TECHNOLOGY

1 patent

US9695017B2Jul 4, 2017

Adjustable intermediate disk body of large double-layer cage and adjusting and moving method thereof

UNIV CHINA MINING & TECHNOLOGY0 citations39

HEFEI DESIGN AND RES INSTITUTE OF COAL INDUSTRY CO LTD

1 patent

US11199091B2Dec 14, 2021

Cageway connecting device and connecting method thereof

HEFEI DESIGN AND RES INSTITUTE OF COAL INDUSTRY CO LTD0 citations34

XUZHOU COAL MINE SAFETY EQUIPMENT MFT CO LTD

1 patent

US9878882B2Jan 30, 2018

Large-tonnage slender externally powered curve rail-mounted unloading skip

XUZHOU COAL MINE SAFETY EQUIPMENT MFT CO LTD0 citations33