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CNPC CHUANQING DRILLING ENG CO LTD CHANGQING WELL DRILLING GENERAL CO

Overview
  • Total Patents
    108
  • GoodIP Patent Rank
    14,236
  • Filing trend
    ⇧ 20.0%
About

CNPC CHUANQING DRILLING ENG CO LTD CHANGQING WELL DRILLING GENERAL CO has a total of 108 patent applications. It increased the IP activity by 20.0%. Its first patent ever was published in 2010. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, basic materials chemistry and measurement are XINJIANG GRAND OILFIELD TECH CO LTD, HAITA PETROLEUM TECH CO LTD and CNPC GROUP WESTERN DRILLING ENG CO LTD.

Patent filings in countries

World map showing CNPC CHUANQING DRILLING ENG CO LTD CHANGQING WELL DRILLING GENERAL COs patent filings in countries
# Country Total Patents
#1 China 108

Patent filings per year

Chart showing CNPC CHUANQING DRILLING ENG CO LTD CHANGQING WELL DRILLING GENERAL COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liu Hongyan 24
#2 Hu Zubiao 23
#3 Wang Qingchen 22
#4 Zhang Jianqing 21
#5 Zhu Mingming 18
#6 Song Shunping 17
#7 Yang Sen 17
#8 Cong Cheng 17
#9 Li Debo 16
#10 He Jingbin 16

Latest patents

Publication Filing date Title
CN111535764A Automatic adding device for drilling fluid treating agent
CN111537395A Automatic rotary viscometer for testing petroleum drilling fluid
CN111537394A Automatic measuring device for drilling fluid performance
CN111087994A Multistage particle mesh cementing wall-repairing working solution and preparation and construction method thereof
CN111075437A QDT type rotary valve pulser and use method thereof
CN110924870A Reaming drill bit with cleaning function and using method
CN110909432A Drill bit design method based on artificial intelligence control theory
CN111042759A Mud blocking umbrella device of blowout preventer and using method
CN110702447A Multifunctional test bed for drilling tool and use method thereof
CN110656895A Drill rod transverse moving device and method
CN110714731A Joint loading and unloading device and using method thereof
CN110695893A Safety righting device and method
CN110685641A Handheld pneumatic mud scraping device and using method thereof
CN110690634A Multifunctional grounding pile pulling device and using method thereof
CN110700769A Electric remote control drilling tool pulling and conveying device and using method thereof
CN110642170A Portable column type heavy object dragging device, method and application
CN110700770A Stretching and conveying device for electric remote control drilling tool to get on and off drill floor and using method thereof
CN110641525A Device and method for aligning drill rods in longitudinal movement mode
CN110700771A Electric remote control kelly bar pulling and conveying device and using method thereof
CN110714728A Device for moving drilling tool on electric remote control catwalk and using method thereof