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CHINA RAIWAY ERYUAN GUIYANG SURVEY AND DESIGN INST CO LTD

Overview
  • Total Patents
    12
  • GoodIP Patent Rank
    139,748
About

CHINA RAIWAY ERYUAN GUIYANG SURVEY AND DESIGN INST CO LTD has a total of 12 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 environmental technology are CHINA RAILWAY CONSTRUCTION BRIDGE ENG BUREAU GROUP OF THE FIFTH ENG CO LTD, CHINA RAILWAY 22ND BUREAU GROUP RAIL ENG CO LTD and ERCHU CO LTD OF CHINA RAILWAY TUNNEL GROUP.

Patent filings in countries

World map showing CHINA RAIWAY ERYUAN GUIYANG SURVEY AND DESIGN INST CO LTDs patent filings in countries
# Country Total Patents
#1 China 12

Patent filings per year

Chart showing CHINA RAIWAY ERYUAN GUIYANG SURVEY AND DESIGN INST CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Fang Qianbao 9
#2 Pang Yingsheng 6
#3 Jiao Kangjie 5
#4 Chen Siyu 5
#5 Fu Shouhong 4
#6 Liu Xiangyuan 4
#7 Kang Li 4
#8 Zhao Baiwen 4
#9 Huang Chenggui 3
#10 Xia Huiping 3

Latest patents

Publication Filing date Title
CN111649720A Device and method for monitoring settlement of working base point of large-gradient tunnel
CN111733808A Umbrella-shaped anchoring device capable of realizing rapid tensioning of anchor cable and reinforcement engineering construction method
CN111663543A Ear wall formula open cut tunnel structure of stake board formula
CN111322086A Connection structure of sluicing cave and main tunnel
CN111335149A Prestressed concrete box girder structure with frequency modulation liquid damper
CN111287171A Tunnel is with super shallow no beam slab bridge structure of burying down-through highway
CN111153460A Underground water and harmful gas separation bin with air sealing device
CN111102003A Flexible groove structure at seam of tunnel drainage ditch
CN110924952A Construction method for three-step seven-step normal medium rock pillar method conversion of super-large section tunnel
CN110924985A Long rock pillar construction method suitable for overlying thin rock stratum
CN109812283A A kind of clip chain self-sealing overlap joint anchor bar of waterproof plate in tunnels
CN109989767A The ruggedized construction and construction method of existing railway are worn under Large span tunnel