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NO 6 ENG CO LTD OF CHINA RAILWAY 20TH BUREAU GROUP

Overview
  • Total Patents
    25
  • GoodIP Patent Rank
    64,257
  • Filing trend
    ⇩ 75.0%
About

NO 6 ENG CO LTD OF CHINA RAILWAY 20TH BUREAU GROUP has a total of 25 patent applications. It decreased the IP activity by 75.0%. Its first patent ever was published in 2015. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, computer technology and measurement are ZHEJIANG HUADONG ENG CONSULTING CO LTD, CHINA RAILWAY CONSTRUCTION BRIDGE ENG BUREAU GROUP OF THE FIFTH ENG CO LTD and HONGRUN CONSTR GROUP CO LTD.

Patent filings in countries

World map showing NO 6 ENG CO LTD OF CHINA RAILWAY 20TH BUREAU GROUPs patent filings in countries
# Country Total Patents
#1 China 25

Patent filings per year

Chart showing NO 6 ENG CO LTD OF CHINA RAILWAY 20TH BUREAU GROUPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chang Yunchao 10
#2 Liu Debing 9
#3 Li Ying 8
#4 Song Chengnian 8
#5 Hui Jianwei 7
#6 Jiang Ziqi 7
#7 Hao Long 7
#8 Wang Cunbao 7
#9 Duan Feng 7
#10 Ma Xiong 6

Latest patents

Publication Filing date Title
CN111910502A Suspension cable overhead structure of existing railway line
CN111879297A Box culvert jacking device and method
CN111926710A Overhead fixing device for multi-track railway
CN111927468A Box culvert jacking device and method
CN111996911A Bridge girder erection machine and bridge girder erection method thereof
CN111305166A Construction method for support frame of bracket template for arc door hinge of overflow gate dam
CN111266856A Bulb head and cone hoisting method of bulb tubular water turbine generator set
CN110905553A Tunnel secondary lining finishing method for sleeve lining mould construction
CN110761804A Karst stratum tunnel secondary lining renovation construction structure and method based on sleeve lining
CN110985003A Tunnel construction method for penetrating through earth-rock boundary stratum
CN110778318A Tunnel pre-reinforcing and excavating construction method for penetrating through earth-rock boundary stratum
CN110671131A Loess tunnel substrate reinforcing structure and method based on high-pressure jet grouting pile
CN110629747A Full-casing full-rotation construction process for pile foundation under complex geological conditions
CN109139104A One kind passes through that clastic rock steep dip is inverse to rush rich water tomography tunnel drainage construction method
CN109488310A Pass through that clastic rock steep dip is inverse to rush rich water tomography method for tunnel construction
CN108035368A A kind of mud riverbed combined cofferdam and its construction method
CN107842030A High-pressure rotary jet grouting pile equipment and construction method are used in a kind of material for diaphragm wall of Cofferdam construction
CN107816050A A kind of concrete cofferdam and earth rock cofferdam combined cofferdam and its construction method
CN107780424A A kind of mud riverbed earth rock cofferdam and its construction method
CN107988910A A kind of upstroke movable framework template overall pulling down method