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CHINA RAILWAY 22ND CONSTRUCTION BUREAU 1ST ENG CO LTD

Overview
  • Total Patents
    27
  • GoodIP Patent Rank
    59,541
  • Filing trend
    ⇧ 100.0%
About

CHINA RAILWAY 22ND CONSTRUCTION BUREAU 1ST ENG CO LTD has a total of 27 patent applications. It increased the IP activity by 100.0%. 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, measurement and machines are CHINA RAILWAY CONSTRUCTION BRIDGE ENG BUREAU GROUP NO 5 ENG CO LTD, CHONGQING URBAN CONSTRUCTION HOLDING GROUP CO LTD and CHINA RAILWAY 19TH BUREAU GROUP SECOND ENG CO LTD.

Patent filings in countries

World map showing CHINA RAILWAY 22ND CONSTRUCTION BUREAU 1ST ENG CO LTDs patent filings in countries
# Country Total Patents
#1 China 27

Patent filings per year

Chart showing CHINA RAILWAY 22ND CONSTRUCTION BUREAU 1ST ENG CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Pang Qianfeng 25
#2 Xu Xiaoyan 25
#3 Liu Jipeng 25
#4 Liu Xiaodong 25
#5 Tang Guihai 25
#6 Sun Minjun 6
#7 An Long 5
#8 Zhang Jun 4
#9 Wang Suliang 4
#10 Li Penghui 4

Latest patents

Publication Filing date Title
CN112223075A Standard template polisher for building
CN111676833A Weighing-free and counterweight-free horizontal swivel construction device and construction method for asymmetric beam
CN108330835A The construction method of setting bracket
CN108397201A The safe construction method of rock tunnel(ling) machine
CN108286920A A kind of implementation of Tunnel Blasting and excavation
CN108362274A Subway surveys and draws Non orientation Traverse computational methods
CN108275573A The construction method for hanging and lifting translation unit equipment of rock tunnel(ling) machine
CN108301320A The method for paving of water-protected enclosure layer based on C40 microlith fiber concretes
CN108049880A The shield machine originated in shield method tunnel construction using small curve radius
CN108364329A The clearance survey and display methods of diaphram wall
CN108150202A Using the lining cutting waterproof/drainage structure of anti-viscous formula splash guard
CN108167000A Lateral enhanced rubber waterstop
CN108149569A For severe cold area high-speed railway bridge floor water-protected enclosure system and its construction method
CN108342987A Bent cap support construction
CN106948841A High ferro tunnel pre-buried channel flow installation mold automatic lifting system and installation method
CN107083975A A kind of small curve radius subsurface excavation method tunnel trolley selection method
CN107448204A Closely wear construction method of deep foundation ditch down in sandy gravel accumulation horizon shallow burial hidden digging tunnel
CN106988231A The T-shaped firm structure line style monitoring point mounting structure of cantilever and its line type control monitoring method
CN106988164A Platy ballastless track structure and its construction method
CN106894296A A kind of bridge area CRTSIII template base board construction methods