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CHINA RAILWAY 20 BUREAU GROUP CORP

Overview
  • Total Patents
    99
  • GoodIP Patent Rank
    14,961
  • Filing trend
    ⇧ 71.0%
About

CHINA RAILWAY 20 BUREAU GROUP CORP has a total of 99 patent applications. It increased the IP activity by 71.0%. Its first patent ever was published in 2013. It filed its patents most often in China and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets civil engineering, measurement and machine tools are China railway tunnel group co ltd, CHINA RAILWAY NO 5 ENG GROUP and KANG NUNG CONSTRUCTION CO LTD.

Patent filings in countries

World map showing CHINA RAILWAY 20 BUREAU GROUP CORPs patent filings in countries

Patent filings per year

Chart showing CHINA RAILWAY 20 BUREAU GROUP CORPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhong Weiling 40
#2 Wu Yingming 37
#3 Ren Shaoqiang 29
#4 Guo Pengchao 27
#5 Xie Jiangsheng 26
#6 Li Xiaoke 26
#7 Wang Cunbao 19
#8 Zhang Huan 18
#9 Wang Hongkun 18
#10 Shen Yuntao 16

Latest patents

Publication Filing date Title
CN112179776A Anchor rod drawing test device
CN112145196A Tunnel inverted arch structure and construction method thereof
CN112112671A Waterproof board trolley
CN112065465A Lining trolley
CN112160775A Waterproof board laying method
CN112145209A Waterproof board laying method
CN112065464A Tunnel waterproof board laying trolley
CN112145186A Tunnel water drainage pressure reduction structure and construction method
CN112082763A Engine test system
CN112177617A Advanced geological forecast prediction method and system for high-pressure water-rich fault tunnel construction
CN112161532A Tunnel smooth blasting method based on axial length uncoupled spaced charging
CN112145227A Facility for preventing water inrush and mud gushing of tunnel and construction method
CN112177913A Air compressor machine test system
CN112100841A Shield tunneling machine attitude prediction method and device, terminal equipment and storage medium
CN112051570A Boulder detection method and apparatus, terminal device and storage medium
CN112029964A Method for manufacturing wear-resistant hob body
CN111963201A Tunnel segment structure and construction method
CN111979929A Swivel bridge closure device and construction method
CN111910477A Installing and positioning structure of ballastless track double-block sleeper
CN112027903A Portal crane walking rail fixing device and portal crane