Inventor

LI QINGZHAO

CN3 patents

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

UNIV CHINA MINING

2 patents

US11131172B2Sep 28, 2021

Method for extracting gas by fracturing coal seam through combination of hydraulic slotting and multi-stage combustion impact wave

UNIV CHINA MINING1 citations60

US10022668B2Jul 17, 2018

Self-regenerative integrated device for synergetic oxidation of low-concentration gas and ventilation gas in coal mine

UNIV CHINA MINING1 citations48

UNIV CHINA MINING & TECHNOLOGY

1 patent

US9605512B2Mar 28, 2017

Mine area distributed combined cooling heating power energy system for extracting gas for coal mine

UNIV CHINA MINING & TECHNOLOGY2 citations68