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CHINA RAILWAY 21 BUREAU GROUP SIXTH ENG CO LTD

Overview
  • Total Patents
    14
  • GoodIP Patent Rank
    117,746
  • Filing trend
    ⇩ 66.0%
About

CHINA RAILWAY 21 BUREAU GROUP SIXTH ENG CO LTD has a total of 14 patent applications. It decreased the IP activity by 66.0%. 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, environmental technology and packaging and shipping are SAMJUNG CONSTRUCTION CO LTD, LANZHOU RAILWAY SURVEY AND DESIGN INST CO LTD and SEALY CO LTD.

Patent filings in countries

World map showing CHINA RAILWAY 21 BUREAU GROUP SIXTH ENG CO LTDs patent filings in countries
# Country Total Patents
#1 China 14

Patent filings per year

Chart showing CHINA RAILWAY 21 BUREAU GROUP SIXTH ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zou Weidong 13
#2 Wang Liang 8
#3 Shi Baozhen 5
#4 Qiao Anwen 3
#5 Zhang Zhongde 3
#6 Liu Jinyuan 2
#7 Jia Feng 2
#8 Zhou Fei 2
#9 Wen Xin 2
#10 Ni Fulai 2

Latest patents

Publication Filing date Title
CN112030614A Roadbed construction method based on large-thickness collapsible loess area column hammer impact pile extension and cement improved soil
CN110104399A A kind of circulation that hoists transports the hopper transporting equipment of material
CN110078184A Patina/active carbon compound coagulant preparation method and be used for tunnel sewage treatment
CN110054319A A kind of constructing tunnel sewage water treatment method based on patina
CN108442356A The construction technology of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system
CN108277794A A kind of blowing filling soft soil foundation vacuum dynamic compaction method composite drainage system
CN107218043A A kind of breaking surrounding rock cavern excavation method
CN107100655A Weak surrounding rock locally changes the simple temporary support system of arch and its applies method
CN107130622A Pool Bridge cushion cap foundation ditch subregion vacuum precipitation system and precipitation method
CN107100156A High-speed railway subgrade settlement monitoring element protection and its distribution method
CN107178075A Railroad bed settlement observes scale protection post and its makes application method
CN107130614A The anti-Landslide System of swelled ground high slope and construction method
CN106758819A Cast-in-Situ Continuous Beam automatic spray curing system
CN106640130A Side-top arch collapse cavity supporting system and method for super-large-section tunnel in plateau region