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CHONGQING ENERGY INVESTMENT GROUP TECH CO LTD

Overview
  • Total Patents
    22
  • GoodIP Patent Rank
    74,004
About

CHONGQING ENERGY INVESTMENT GROUP TECH CO LTD has a total of 22 patent applications. Its first patent ever was published in 2019. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, measurement and computer technology are STEIN NARVESTAD AS, CHRISTOS BYRON PERCY and HANDAN SPECIAL SHAFT SINKING CO LTD CHINA COAL ENERGY GROUP CO LTD.

Patent filings in countries

World map showing CHONGQING ENERGY INVESTMENT GROUP TECH CO LTDs patent filings in countries
# Country Total Patents
#1 China 22

Patent filings per year

Chart showing CHONGQING ENERGY INVESTMENT GROUP TECH CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Guo Chenye 20
#2 Huang Changwen 17
#3 Li Wenshu 14
#4 Wang Kai 13
#5 Jiang Hecai 12
#6 Zhang Cuilan 12
#7 He Hua 12
#8 Zhou Junjie 12
#9 Zhou Dongping 12
#10 Liu Dengfeng 12

Latest patents

Publication Filing date Title
CN112127854A Staged fracturing and extraction method for long drill hole of coal seam and pressure-extraction integrated device
CN111997574A Layered metering extraction method and extraction device for multi-coal-seam gas extraction
CN111734467A Steep coal seam is pitched pseudo-inclined and is adopted working face hydraulic support to one side convenient to remove
CN111577232A Coal mine underground fracturing control safety guarantee method
CN111552008A Coal mine underground geologic structure drilling refinement all-dimensional detection method
CN111425178A Coal mine underground branch drilling staged fracturing permeability increasing method and pressure pumping integrated device
CN110424948A Evaluation method suitable for the detection of coal mine gas extraction borehole sealing quality
CN110424938A Joint transient electromagnetic, salinity measurement and the pressure break of microseism coverage test method
CN110426501A A method of a layer hydraulic fracturing coverage is worn based on the determination of salinity measurement method
CN110284849A A kind of hole sealing device and method for sealing with pressure for the nearly horizontal fractures drilling of coal mine
CN110185400A A kind of coal bed gas extraction drilling prosthetic appliance
CN110173290A A kind of hydraulic support for high-dipping stope face
CN110185464A A kind of shield machine monitoring system
CN110273692A A kind of advanced drilling machine and shield machine cooperate the method for prying into hole
CN110307026A A kind of lift bottom method of hydraulic support
CN110306988A A kind of deflection deviation correction control system of shield machine
CN110130914A A kind of preceding shield body of coal mine light section shield excavation machine
CN110159283A A kind of support shoe system of coal mine light section shield excavation machine
CN110159289A A kind of coal mine light section shield excavation machine
CN110159282A A kind of construction technology of coal mine light section shield shield excavation machine