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China railway 23rd bureau group co ltd

Overview
  • Total Patents
    74
  • GoodIP Patent Rank
    31,811
  • Filing trend
    ⇧ 200.0%
About

China railway 23rd bureau group co ltd has a total of 74 patent applications. It increased the IP activity by 200.0%. Its first patent ever was published in 2009. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, machines and computer technology are CHINA GEZHOUBA GROUP NO 6 ENG CO LTD, CHINA RAILWAY NO 3 ENG GROUP and CCCC SECOND HIGHWAY FOURTH ENG CO LTD.

Patent filings in countries

World map showing China railway 23rd bureau group co ltds patent filings in countries
# Country Total Patents
#1 China 74

Patent filings per year

Chart showing China railway 23rd bureau group co ltds patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Liu Yanlong 55
#2 Tian Baohua 34
#3 Huo Li 32
#4 Chen Youlin 31
#5 Wang Hong 22
#6 Zhai Yong 20
#7 Xi Cheng 17
#8 Tan Bin 12
#9 Yu Pijin 10
#10 Zhang Changchun 10

Latest patents

Publication Filing date Title
CN111577297A Deviation rectifying method for upward drifting of shield machine posture in upper-soft and lower-hard mudstone composite stratum
CN111577306A Improved structure applied to water-rich sandy gravel stratum shield machine and construction method
CN111119072A Staggered construction method for steps of high-pier bridge in mountainous area
CN111155539A Existing road side high cutting excavation construction method
CN111287795A Inverted arch dismantling method
CN111121576A Boulder deep hole blasting method
CN111119521A Prefabricated station plate of subway station and lifting installation method thereof
CN110978233A Internal mold system for box culvert prefabrication
CN110984224A Prefabricated rail top air duct of subway station and lifting installation method thereof
CN110042842A A kind of open cut construction method of deep foundation ditch for wearing river
CN110042843A A kind of large deep foundation pit construction method of complex condition
CN110067561A Under wear both wired Urban Underground mining sectbn construction methods
CN110008564A A kind of underground structure safety evaluation method based on crack and safety coefficient dual control
CN110008563A A kind of determination method of Urban Underground large-span structure safety coefficient
CN109681236A Big cross section water-rich sand layer shield driving synchronous grouting method
CN109208642A A kind of construction method of assembled under-traverse tunnel
CN109555526A Grouting strengthening method for underground cavity
CN109457736A One kind being used for underground engineering side wall and bottom plate water seepage treatment method
CN109083181A Collapsible loess super long large diameter pile foundation churning driven half bore mud wet process pore-forming technique
CN108914927A The miniature steel pipe pile reinforced construction method of existing line base insuring highway' slope