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CHIAN RAILWAY 14TH BUREAU GROUP CORPORATION TUNNEL ENG CO LTD

Overview
  • Total Patents
    31
  • GoodIP Patent Rank
    50,163
About

CHIAN RAILWAY 14TH BUREAU GROUP CORPORATION TUNNEL ENG CO LTD has a total of 31 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 materials and metallurgy are SCHWARZ HOLYWELL LTD, THE FIFTH ENGEERING CO LTD OF CHINA RAILWAY 5TH BUREAU GROUP CO LTD and China railway tunnel group co ltd.

Patent filings in countries

World map showing CHIAN RAILWAY 14TH BUREAU GROUP CORPORATION TUNNEL ENG CO LTDs patent filings in countries
# Country Total Patents
#1 China 31

Patent filings per year

Chart showing CHIAN RAILWAY 14TH BUREAU GROUP CORPORATION TUNNEL ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wang Zhikang 21
#2 Sun Wei 20
#3 Zhang Xi 20
#4 Guo Dong 20
#5 Xu Chuandong 20
#6 Gao Hongji 19
#7 Geng Bentao 18
#8 Wang Beibei 13
#9 Hu Shaohua 13
#10 Sui Xiaoyan 12

Latest patents

Publication Filing date Title
CN111980713A Shield starting sealing device and method
CN112010669A Underground cavity filling method and system
CN112065417A Center-protruded anti-caking cutter head
CN111809901A Isolation shed
CN111779317A Movable closed awning
CN111648825A Tunnel collapsed cavity rapid retaining wall and emergency treatment construction process
CN111679319A Identification method for surface parameters adapting to TBM rapid tunneling
CN111648776A Rapid treatment method for preventing collapse and expansion of through funnel-shaped tunnel
CN111648782A Method for identifying stratum and adjusting tunneling parameters according to TBM (tunnel boring machine) self-vibration information
CN110924963A Shield construction system
CN111058861A Hole structure
CN110905534A Base structure
CN110924746A Enclose fender structure and construction site
CN110985013A Shield construction system
CN110924543A Waterproof structure and construction method thereof
CN110949952A Belt conveyor system
CN110924949A Assembled shield structure manhole system
CN111058860A Cave opening construction method
CN110818334A Slurry for shield grouting and preparation method thereof
CN110988123A Fault maintenance method of screw conveyor