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CNPC BOHAI DRILLING ENG CO LTD

Overview
  • Total Patents
    966
  • GoodIP Patent Rank
    1,774
  • Filing trend
    ⇩ 27.0%
About

CNPC BOHAI DRILLING ENG CO LTD has a total of 966 patent applications. It decreased the IP activity by 27.0%. Its first patent ever was published in 2010. It filed its patents most often in China and United States. Its main competitors in its focus markets civil engineering, basic materials chemistry and macromolecular chemistry and polymers are QINGDAO DADI NEW ENERGY TECH RESEARCH INSTITUTE, SHENGLI ADMIN SINOPEC DRILLING and 9668241 CANADA INC.

Patent filings in countries

World map showing CNPC BOHAI DRILLING ENG CO LTDs patent filings in countries
# Country Total Patents
#1 China 965
#2 United States 1

Patent filings per year

Chart showing CNPC BOHAI DRILLING ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Feng Qiang 69
#2 Liu Yin 60
#3 Niu Zengqian 56
#4 Wang Lin 53
#5 Xu Kebin 49
#6 Zhang Shilin 46
#7 Chen Shichun 42
#8 Wang Hongke 39
#9 Zhou Junran 38
#10 Wang Yishan 38

Latest patents

Publication Filing date Title
CN112253078A Construction process for well testing and completion in well cluster field
CN112253044A High-ductility small-diameter dissolvable bridge plug
CN112196520A Underground radar detection anti-collision short section, detection anti-collision system and detection anti-collision method
CN112197955A Performance testing device and method for pulse generator control valve
CN112217078A Device and method for insulating, protecting, bearing and sealing connector
CN112234403A Oil-immersed contact type transmission slip ring for intelligent drilling tool
CN112267851A Composite drainage gas production pipe column for draining accumulated liquid in 'lying well' well and method thereof
CN112268917A Evaluation method for acid damage effect of low-permeability rock
CN112065374A Dynamic optimization design method for measuring mud pressure wave signal period while drilling
CN112081530A PDC drill bit with buffer gear
CN112049592A Returnable slip type casing tieback make-up connector
CN112257254A Stratum drillability evaluation method based on grey prediction
CN112257836A RFID chip installation method applied to well control device
CN112282729A Gas logging data detection experimental device for simulating borehole environment
CN112241771A Multi-dimensional identification method of well control device
CN112049628A Method for judging and identifying oil-water interface of buried hill by using water content index
CN112227978A Magnetic repulsion damping drilling tool
CN112258022A Well control device management system and method based on Internet of things and Internet
CN112096308A Buffer instantaneous pressure reduction short section for PDC drill bit
CN112049567A Well drilling speed-up instrument suitable for screw rod drilling tool