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CHINA RAILWAY 14 BUREAU GROUP CO LTD

Overview
  • Total Patents
    78
  • GoodIP Patent Rank
    18,676
  • Filing trend
    ⇧ 2750.0%
About

CHINA RAILWAY 14 BUREAU GROUP CO LTD has a total of 78 patent applications. It increased the IP activity by 2750.0%. Its first patent ever was published in 2017. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, measurement and it methods for management are SHANGHAI TUNNEL ENG CO LTD, URBAN MASS TRANSIT ENG CO LTD CHINA RAILWAY 11TH BUREAU GROUP and CHINA RAILWAY 12TH BUREAU GR.

Patent filings in countries

World map showing CHINA RAILWAY 14 BUREAU GROUP CO LTDs patent filings in countries
# Country Total Patents
#1 China 78

Patent filings per year

Chart showing CHINA RAILWAY 14 BUREAU GROUP CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Li Zhanxian 46
#2 Wang Huan 41
#3 Li Teng 28
#4 Guo Yong 26
#5 Wang Keyong 21
#6 Lu Gang 17
#7 Liu Xiaoguo 17
#8 Chen Jian 16
#9 Chen Shuang 14
#10 Liu Lei 14

Latest patents

Publication Filing date Title
CN112066880A Device, method and system for measuring overall dimension of shield segment
CN111982003A Method for detecting stress deformation of shield tunnel segment
CN111792887A Anti-seismic synchronous grouting material
CN111745794A Box culvert mould of shield tunnel
CN111716060A Mould for reinforcing cage of pipe piece
CN111764915A Installation method of shield tail of shield machine
CN111764916A Sealing method of sealing system of shield tail of shield machine
CN111636882A Shield tail sealing system of shield machine and control method
CN111411973A Shield sealing device and shield sealing method
CN111366091A Method and system for determining duct piece dislocation to be assembled
CN111335907A Control method, control device and storage medium for stratum deformation in shield construction process
CN110966023A Horizontal control device for pipe curtain end
CN111085637A Reinforcing cage processing device
CN111119906A Pipe curtain construction equipment
CN110552331A Composite energy dissipater suitable for long-distance and complex-terrain slope surface drainage
CN110409386A It is a kind of integrate flood discharge, energy dissipating, sand setting, sediment outflow multifunction structure pond
CN110439590A Method for tunnel construction
CN110397449A Tunnel inverted arch construction method
CN110030939A A kind of country rock linear displacement measuring device and method
CN109736518A Interior decoration construction method