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THE FOURTH ENG CO LTD OF CHINA RAILWAY NO 5 ENG GROUP

Overview
  • Total Patents
    19
  • GoodIP Patent Rank
    86,507
  • Filing trend
    ⇧ 200.0%
About

THE FOURTH ENG CO LTD OF CHINA RAILWAY NO 5 ENG GROUP has a total of 19 patent applications. It increased the IP activity by 200.0%. Its first patent ever was published in 2017. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, measurement and materials and metallurgy are CHINA RAILWAY 12TH BUREAU GR, H L & H TIMBER PROD and CHINA RAILWAY NO 10 ENG GROUP CO LTD.

Patent filings in countries

World map showing THE FOURTH ENG CO LTD OF CHINA RAILWAY NO 5 ENG GROUPs patent filings in countries
# Country Total Patents
#1 China 19

Patent filings per year

Chart showing THE FOURTH ENG CO LTD OF CHINA RAILWAY NO 5 ENG GROUPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Jiang Si 6
#2 Luo Duhao 5
#3 Liu Zhenwu 5
#4 Xiao Chengyi 4
#5 Li Ruiqing 3
#6 Zhu Yongqing 3
#7 Chen Yuelong 3
#8 Yang Yang 2
#9 Zheng Bin 2
#10 Li Yayun 2

Latest patents

Publication Filing date Title
CN112145183A Construction method for upward excavation of shallow-buried weak surrounding rock steep slope tunnel
CN112145195A Construction method of double-layer orthogonal frame culvert in underground excavation station
CN112252187A In-situ scattered assembling and hoisting method for steel box girder
CN112033461A Multi-point continuous measuring device and method for large-span concrete beam
CN112195797A Closure construction method for continuous beam bridge
CN111962504A Construction method for covering and digging top-down permanent steel pipe column
CN111732001A Suspension cable hoisting structure and method for prefabricated part in steep valley terrain
CN111908824A Composite concrete admixture and preparation method and application thereof
CN111847958A Composite retarding material and preparation method thereof
CN111622778A Large-span tunnel lining subassembly
CN111472278A Intelligent bridge maintenance system and method
CN111305879A Excavation supporting method of arched straight wall type tunnel
CN110284890A A kind of clast stream formation tunnel excavation construction method and structure
CN110193550A A kind of rotary moving fashioned iron hole punched device
CN110006335A A kind of near region Tunnel Blasting vibration dynamic strain test method suitable in built tunnel
CN109488311A A kind of Three-arched tunnel construction method
CN109209388A A kind of Construction of Silo plate device
CN108755438A A kind of Y types pier Construction of continuous beam π types holder and its construction method of installation
CN108129110A A kind of high-speed railway large cross-section tunnel prestressed cable anchorage paste materials