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CHINA RAILWAY 18TH BUREAU GROUP CO LTD

Overview
  • Total Patents
    276
  • GoodIP Patent Rank
    5,734
  • Filing trend
    ⇧ 69.0%
About

CHINA RAILWAY 18TH BUREAU GROUP CO LTD has a total of 276 patent applications. It increased the IP activity by 69.0%. Its first patent ever was published in 2007. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, machines and it methods for management are CHINA RAILWAY 20 BUREAU GROUP CORP, URBAN MASS TRANSIT ENG CO LTD CHINA RAILWAY 11TH BUREAU GROUP and CHINA RAILWAY NO 5 ENG GROUP.

Patent filings in countries

World map showing CHINA RAILWAY 18TH BUREAU GROUP CO LTDs patent filings in countries
# Country Total Patents
#1 China 276

Patent filings per year

Chart showing CHINA RAILWAY 18TH BUREAU GROUP CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhang Xin 76
#2 Huang Xin 40
#3 Zhao Jingbo 27
#4 Yuan Shuai 23
#5 Zhang Jingjing 20
#6 Wang Xiaodan 19
#7 Pan Jianli 18
#8 Liu Yingliang 16
#9 Song Hongkun 15
#10 Yue Changcheng 14

Latest patents

Publication Filing date Title
CN112050021A On-site repairing method of JPCCP (joint sealing gasket pipe)
CN112065491A Tunnel construction ventilation method
CN112065492A Synchronous operation rack for tunnel excavation construction and synchronous construction method
CN111946367A Grouting reinforcement method for tunnel passing through water-rich fault
CN111946356A Ultra-long distance hard rock pipe jacking construction method
CN111946355A Construction method for long-distance rock jacking pipe to penetrate through water-rich fault
CN111878095A Construction method for existing underground structure of newly-built channel connection without reserved interface
CN111749224A Soft basic reinforced structure in rich water quicksand layer
CN111779266A Stair are pour construction and are used rotatory aluminium mould of combination
CN111878084A Rapid treatment method for controlling surface subsidence by using large-diameter shield construction in case of meeting stratum funnel
CN111734435A Anti-bias method for surrounding locking leg of self-advancing long anchor rod of advanced pipe shed and arch frame
CN111720134A Method for replacing TBM cutter head in hole without enlarging hole
CN111677517A Method for entering tunnel into main tunnel by tunnel auxiliary pilot pit
CN111948165A Method for detecting hypochlorite ions of construction material based on optical probe
CN111948164A Method for detecting construction material sulfate radical based on optical probe
CN111691895A Soft-crushing movable large-bias-pressure wet carbonaceous shale tunnel soft-hard double-layer primary support excavation method
CN111593676A Construction method of thin-wall hollow pier
CN111691894A Construction process of hole pipe shed
CN111764288A Rack falling device and rack falling method
CN111810163A Nine-lane double-arch construction method for underground excavation through underground longitudinal and transverse channels