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CHINA RAILWAY 21ST BUREAU GROUP THE 3RD ENG CO LTD

Overview
  • Total Patents
    31
  • GoodIP Patent Rank
    51,273
  • Filing trend
    0.0%
About

CHINA RAILWAY 21ST BUREAU GROUP THE 3RD ENG CO LTD has a total of 31 patent applications. It increased the IP activity by 0.0%. 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, machine tools and packaging and shipping are MACKINA WESTFALIA S A, WILHELM REPPEL and AGUILAR VERA OSCAR OCTAVIO.

Patent filings in countries

World map showing CHINA RAILWAY 21ST BUREAU GROUP THE 3RD ENG CO LTDs patent filings in countries
# Country Total Patents
#1 China 31

Patent filings per year

Chart showing CHINA RAILWAY 21ST BUREAU GROUP THE 3RD ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ma Xiaoli 28
#2 Feng Yu 19
#3 Wang Feigang 14
#4 Li Guangjun 13
#5 Wu Xiaofeng 11
#6 Zhuang Qianli 10
#7 Wu Xiucheng 10
#8 Liu Zhaobo 8
#9 Feng Junhua 8
#10 Lyu Jian 8

Latest patents

Publication Filing date Title
CN111112688A Arch frame connecting plate combined type accurate positioning drilling machine
CN111058871A Two lining concrete self-propelled spray curing means in tunnel
CN110977091A Automatic cutting machine for magnetic positioning circular arc-shaped steel plate
CN110952997A Self-detaching equipment for construction formwork trolley in tunnel
CN111017824A Self-lifting moving device for large-diameter pipeline construction
CN110883379A Whole bundle automatic cutting device of prefabricated reinforcing bar
CN110587028A Disposable cutting device for whole bundle binding of steel bars
CN110629640A Automatic moving device for road bridge deck concrete construction vibration beam
CN110486366A A kind of internal expanding type screw rod forced locking device
CN110465607A The quick apparatus for bending of hand-held hydraulic reinforcing bar
CN110280699A Steel reinforcement cage tie hoop rotates producing device automatically
CN110369641A A kind of hydraulic cold cutting machine
CN110388217A Big cross section soft-rock slope tunnel slope is into main tunnel ripping construction method
CN110230264A Reinforcing bar prefabricated component is accurately positioned clamping device
CN110091238A The automatic cleaning and polishing device of concrete delivery pipe
CN109057830A The self-propelled all-hydraulic automatic side shifter of tunnel lining trolley
CN108868832A Tunnel double-lining concrete construction is without door frame formwork jumbo
CN108729947A Tunnel double-lining drainpipe accurate positioning device
CN108687270A The automatic machine-shaping device of stirrup in road and bridge construction pile foundation cage
CN108482888A Utilize the cement storage pot of recycling high-effective dust-removing