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China railway engineering equipment group co ltd

Overview
  • Total Patents
    880
  • GoodIP Patent Rank
    1,798
  • Filing trend
    ⇧ 111.0%
About

China railway engineering equipment group co ltd has a total of 880 patent applications. It increased the IP activity by 111.0%. Its first patent ever was published in 2012. It filed its patents most often in China, WIPO (World Intellectual Property Organization) and Australia. Its main competitors in its focus markets civil engineering, measurement and packaging and shipping are BURRELL MINING PRODUCTS INC, HUAI MINE WEST MINE INVESTMENT MAN CO LTD and GEORG BACHMANN.

Patent filings in countries

World map showing China railway engineering equipment group co ltds patent filings in countries

Patent filings per year

Chart showing China railway engineering equipment group co ltds patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Jia Lianhui 178
#2 Li Jianbin 146
#3 Ye Lei 118
#4 He Fei 99
#5 Zhuo Xingjian 97
#6 Wang Dujuan 89
#7 Jiang Lijie 84
#8 Wen Yongliang 75
#9 Xiao Wei 73
#10 Ning Xiangke 65

Latest patents

Publication Filing date Title
CN112211642A Diameter-variable shield and diameter-variable method
CN112283566A Barrel-changing grease pump device and air pressure control system thereof
CN112253153A Super large section tunnel tunnelling host computer and shield structure machine
CN112049653A Shield tunneling machine starting device and shield tunneling machine starting method
CN112253166A Prefabricated coupling device between pipe joints and construction method applying prefabricated coupling device
CN112112655A Shield diameter measuring device and excavation diameter determining method
CN112145190A Hydraulic control system for telescopic main drive and cutter head swing of large-diameter shield tunneling machine
CN112240215A Waterproof structure between water-stop strip and prefabricated component and construction method of waterproof structure
CN112196848A Hydraulic control system of shield machine main drive anti-torsion device
CN112065430A Shield tunneling machine quarrying device and working method
CN112049655A Flushing device for normal-pressure cutter head, slurry shield machine and flushing method
CN111997631A Tunnel construction method and shield tunneling machine
CN111961942A Wear-resistant material, preparation method and application
CN112129620A Pipe joint loading test distribution beam, test device and test method
CN112031786A Tunnel portal ring beam structure and method for connecting tunnel portal ring beam structure with steel sleeve
CN112065418A Control method for excavation path of cantilever excavator
CN112158678A Wire winding device
CN112031804A Cantilever excavator and construction method thereof
CN112031785A Starting device of development machine
CN112031788A Water jet flow breaking-in and expanding heading machine and construction method thereof