Learn more

CHINA RAILWAY NO 8 ENG GROUP CO LTD

Overview
  • Total Patents
    18
  • GoodIP Patent Rank
    93,710
About

CHINA RAILWAY NO 8 ENG GROUP CO LTD has a total of 18 patent applications. Its first patent ever was published in 2018. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, machines and materials and metallurgy are GRUEN & BILFINGER AG, KWANG SUNG GROUTING MACHINE and CSCEC4 CIVIL ENG CO LTD.

Patent filings in countries

World map showing CHINA RAILWAY NO 8 ENG GROUP CO LTDs patent filings in countries
# Country Total Patents
#1 China 18

Patent filings per year

Chart showing CHINA RAILWAY NO 8 ENG GROUP CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhu Yaqiang 6
#2 Zuo Qingwen 4
#3 Ren Liwen 4
#4 Guo Xiaowei 3
#5 Peng Xiang 3
#6 Wei Hongliang 3
#7 Zhu Zhangyi 3
#8 Xu Qing 3
#9 Li Yong 3
#10 Gu Liudong 3

Latest patents

Publication Filing date Title
CN111501438A Continuous rigid frame PC track beam line shape adjusting construction method
CN112012658A Ultra-deep large-diameter bored pile hole forming method
CN111482852A Layered soft rock standard test block cutting and polishing integrated device and using method
CN111395638A Self-insulation building block suitable for humid areas
CN110735652A Single side wall formwork trolley
CN110777667A Hoisting method for preventing deformation of steel pipe arch
CN110645033A Device and method for deep grouting in sandy cobble stratum shield construction tunnel
CN110499773A A kind of steel cofferdam back cover concrete infiltration method for removing
CN110424274A The construction method of simple-supported thencontinuous PC track girder
CN110565670A sinking construction system without water drainage for open caisson and construction method thereof
CN110344412A A kind of positioning device and method in deep water torrent region Bored Pile of Bridge steel pile casting
CN110185394A A kind of anti-torrent floating drilling equipment and erection method
CN110158582A A method of trestle steel pipe pile is set on intectate riverbed
CN109868750A A kind of freely-supported steel truss girder four-point supporting pushing tow system and pushing method
CN109898425A A kind of construction method with Inclined cable-stayed cantilever pouring concrete arch-type bridge arch ring
CN109763432A A kind of Straddle type monorail end bay Dun Dun seam formwork structure and application method
CN109665615A Municipal sewage plant's denitrification filter pool concrete irregular secondary structure construction method
CN109024638A The hardened stiff plastic argillic horizon excavation construction method of deep water in a kind of steel cofferdam