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CHINA RAILWAY 22ND BUREAU GROUP CO LTD

Overview
  • Total Patents
    23
  • GoodIP Patent Rank
    71,273
  • Filing trend
    ⇧ 200.0%
About

CHINA RAILWAY 22ND BUREAU GROUP CO LTD has a total of 23 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 computer technology are CHINA RAILWAY FIRST SURVEY & DESIGN INST GROUP LTD, CHINA RAILWAY LIUYUAN GROUP CO LTD and HONGRUN CONSTR GROUP CO LTD.

Patent filings in countries

World map showing CHINA RAILWAY 22ND BUREAU GROUP CO LTDs patent filings in countries
# Country Total Patents
#1 China 23

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Yang Shouyi 6
#2 Bai Zibin 6
#3 Li Qiang 6
#4 Qin Fei 5
#5 Xu Li 4
#6 Ye Changyao 4
#7 Tuo Jun 3
#8 Zhang Xiaoxing 3
#9 Zhang Jinlong 3
#10 Liu Changyong 2

Latest patents

Publication Filing date Title
CN112211111A Spherical hinge positioning and mounting system based on three-dimensional laser scanning and application method thereof
CN111926718A Nondestructive rapid mounting and dismounting temporary anchoring device and nondestructive rapid mounting and dismounting temporary anchoring method
CN112003202A Cable connection method
CN111877184A Railway continuous beam swivel construction method based on BIM
CN111877185A Horizontal turning construction method for continuous beam in severe cold area
CN111800924A Control system and method for annunciator
CN111577337A Trolley balancing device
CN111520168A Trolley sealing device
CN111677529A Lining cutting platform truck
CN111515899A Trolley replacing device and method
CN110725701A Efficient and safe over-bracing lining trolley for construction
CN110775549A Use high-efficient convenient top mould platform truck
CN110439307A Safety protection facility and application method for round manual digging pile construction
CN110224332A Line device cable replacing options
CN110030943A A kind of Free Station mode specifies the scan method of particular range
CN109056709A A method of using full-sleeve hydraulic drill rig construction In Karst Areas For Bridge pile foundation
CN108716172A A kind of solid concrete roabed composite conductor rail of steel and aluminum basis built-in fitting specific purpose tool
CN108399283A One kind being based on III type track plates appearance and size quick calculation methods of CRTS
CN108180834A A kind of industrial robot is the same as three-dimensional imaging instrument position orientation relation scene real-time calibration method
CN108519049A A method of establishing III type track plates of the CRTS detection feature for meeting prescribed requirement