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CHINA RAILWAY 22ND BUREAU GROUP RAIL ENG CO LTD

Overview
  • Total Patents
    38
  • GoodIP Patent Rank
    40,692
About

CHINA RAILWAY 22ND BUREAU GROUP RAIL ENG CO LTD has a total of 38 patent applications. Its first patent ever was published in 2018. It filed its patents most often in China. Its main competitors in its focus markets civil engineering, it methods for management and measurement are RANKEN RAILWAY CONSTRUCTION GROUP CO LTD, CHINA RAILWAY CONSTRUCTION BRIDGE ENG BUREAU GROUP OF THE FIFTH ENG CO LTD and SUNGWOO SLOPE REINFORCEMENT COMPLETION CO LTD.

Patent filings in countries

World map showing CHINA RAILWAY 22ND BUREAU GROUP RAIL ENG CO LTDs patent filings in countries
# Country Total Patents
#1 China 38

Patent filings per year

Chart showing CHINA RAILWAY 22ND BUREAU GROUP RAIL ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Pang Qianfeng 24
#2 Wang Tianwu 23
#3 Tian Zuohua 23
#4 Liu Jipeng 15
#5 Xu Xiaoyan 15
#6 Liao Yougen 13
#7 Chen Han 10
#8 Jiang Long 9
#9 Yao Yi 8
#10 Zhou Zubin 8

Latest patents

Publication Filing date Title
CN111851576A Template support system for tunnel construction
CN111519679A Rapid grooving construction method for micro-weathering rock of diaphragm wall
CN111547976A Mud-rock residue soil mud-water separation construction method
CN111502678A Method for forming mud film of slurry shield in highly permeable stratum
CN111626575A Construction safety quality hidden danger management method based on internet environment
CN111255478A Movable trolley supporting structure
CN111255468A Double-shield TBM small-clear-distance tunnel construction method
CN111236947A Construction method of vertical freezing subway shaft
CN111305215A Bentonite slurry mixing proportion blending method in underground continuous wall construction
CN111270565A Ballastless track in high-speed rail turnout area and anti-cracking construction method thereof
CN111350509A Muck improvement and grouting method for sandy gravel stratum tunnel shield construction
CN111101958A Construction method for tunnel shield interval lower penetrating and winding city
CN111156009A Construction and monitoring method for tunnel shield underpass viaduct
CN111335904A Shield downward-penetrating building construction monitoring method
CN111156008A Shield construction and monitoring method for dangerous source river electric power tunnel
CN111075460A Shield construction and monitoring method for urban dense building
CN111173522A Construction method for hoisting and descending air shaft shield machine
CN111156006A Construction method for shield underpass of dangerous pipeline
CN110984221A Construction method for reinforcing end socket at initial end of air shaft and guide wall structure
CN110820752A Bottom plate steel bar system and shield well foundation pit main structure construction method comprising same