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THE FIRST CONSTRUCTION DIV CO LTD OF CHINA RAILWAY TUNNEL GROUP

Overview
  • Total Patents
    34
  • GoodIP Patent Rank
    45,243
  • Filing trend
    ⇧ 150.0%
About

THE FIRST CONSTRUCTION DIV CO LTD OF CHINA RAILWAY TUNNEL GROUP has a total of 34 patent applications. It increased the IP activity by 150.0%. Its first patent ever was published in 2016. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, electrical machinery and energy and machines are China railway tunnel stock co ltd, GEORGE WILLIAM CHRISTIANS and FUTE INTELLIGENT EQUIPMENT CHONGQING CO LTD.

Patent filings in countries

World map showing THE FIRST CONSTRUCTION DIV CO LTD OF CHINA RAILWAY TUNNEL GROUPs patent filings in countries
# Country Total Patents
#1 China 34

Patent filings per year

Chart showing THE FIRST CONSTRUCTION DIV CO LTD OF CHINA RAILWAY TUNNEL GROUPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liu Longwei 20
#2 Zhang Zhihe 11
#3 Xin Guoping 10
#4 An Bo 9
#5 Li Rui 8
#6 Zhang Wenming 8
#7 Zang Minrui 8
#8 Xu Pei 8
#9 Hong Kairong 7
#10 Yu Beijun 6

Latest patents

Publication Filing date Title
CN112252339A Upward full-length bonding anchor cable hole subsection grout stopping structure and method
CN112196590A Node processing method for enabling anchor rods to penetrate through lining waterproof layer in large-range intensive mode
CN112095664A Prestressed full-length anchoring mortar anchor rod for underground cave depot and rapid anchoring tensioning method
CN112112676A Secondary grouting and primary tensioning structure for anchor cable without bonding in hole and construction method
CN112195941A Quick installation method for overlong vertical upward prestressed anchor cable of underground cave depot
CN112240207A Jumbo-span cave depot lattice jumping excavation and rapid bottom turning method
CN112227370A Continuous casting method for preventing arch part cracking of large-volume concrete of large-span underground cavern
CN111550270A Ultra-large self-propelled tunnel multifunctional operation platform and tunnel steel bar waterproof board construction method
CN111456764A Heavy lining trolley with pushing sliding type disc buckle support and lining formwork construction method
CN111287755A Method for improving excavation stability of tunnel body of aeolian sand stratum
CN111220036A Blasting method for pilot tunnel at lower section of vertical shaft water curtain roadway
CN110748349A Double-molecular originating method for small-clear-distance double-line tunnel shield
CN110714765A Construction method for post-construction air shaft of shield interval
CN110500126A Hollow bolt filling adaptor and hollow bolt construction technology
CN110630325A Draining method for long-distance tunnel by utilizing horizontal directional drilling
CN110617105A Draining structure of deep-buried rich water broken belt long-distance tunnel
CN110295912A The sensitive non-quick-fried efficient excavating load of the good hard rock large cross-section tunnel of location integrality
CN110219654A The leading construction method of mud stone multiple-arch tunnel side pilot tunnel
CN110159207A A kind of drilling equipment for ultra-deep horizontal drilling of constructing
CN110029948A Drill bit erection device for long range horizontal drilling of constructing