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LANZHOU RAILWAY SURVEY AND DESIGN INST CO LTD

Overview
  • Total Patents
    11
  • GoodIP Patent Rank
    156,162
  • Filing trend
    ⇩ 66.0%
About

LANZHOU RAILWAY SURVEY AND DESIGN INST CO LTD has a total of 11 patent applications. It decreased the IP activity by 66.0%. 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, environmental technology and materials and metallurgy are CHINA RAILWAY 21 BUREAU GROUP SIXTH ENG CO LTD, CHUNMAENG CO LTD and DONG MYEONG ENG CONSULTANTS & ARCHITECTURE CO LTD.

Patent filings in countries

World map showing LANZHOU RAILWAY SURVEY AND DESIGN INST CO LTDs patent filings in countries
# Country Total Patents
#1 China 11

Patent filings per year

Chart showing LANZHOU RAILWAY SURVEY AND DESIGN INST CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wang Maoyu 5
#2 Hu Shuchao 5
#3 Huang Li 4
#4 Yang Min 4
#5 Qin Shang 4
#6 Lin Gang 3
#7 Ma Yuchun 3
#8 Chen Junbo 3
#9 Wu Wei 2
#10 Li Lin 2

Latest patents

Publication Filing date Title
CN112138548A Ceramic membrane loaded with nano ferrite, preparation method and sewage treatment method
CN110258586A Increase the structure and method of existing high roadbed tunnel backfill height
CN110205889A The method that the wide transformation of existing line base side is carried out using Combined piling slab-wall structure
CN110017143A A kind of auxiliary method of small interval loess tunnel construction of central division wall
CN108166404A A kind of railway overpass wind prevention and sand resistance plate
CN107487836A A kind of preparation method of city sludge bio-carrier
CN107366235A A kind of composite air-permeable formula sound barrier device
CN106703092A Connecting structure and method for foundation piles and bearing platform in pile foundation underpinning
CN108218099A The sewage treatment unit combined based on anaerobism suspension film with artificial swamp
CN106277332A A kind of artificial marsh sewage treatment system
CN104790290A Frame and spring combination type bridge and road transition section structure integrated with bridge abutment