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CHINA RAILWAY NO 3 ENG GROUP

Overview
  • Total Patents
    237
  • GoodIP Patent Rank
    8,218
  • Filing trend
    ⇧ 117.0%
About

CHINA RAILWAY NO 3 ENG GROUP has a total of 237 patent applications. It increased the IP activity by 117.0%. Its first patent ever was published in 2007. It filed its patents most often in China and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets civil engineering, machines and measurement are 4TH ENG CO LTD CTCE GROUP, China railway 23rd bureau group co ltd and HARBIN RAILWAY CONSTRUCTION GROUP CO LTD OF CHINA RAILWAY 22ND CONSTRUCTION BUREAU CO LTD.

Patent filings in countries

World map showing CHINA RAILWAY NO 3 ENG GROUPs patent filings in countries

Patent filings per year

Chart showing CHINA RAILWAY NO 3 ENG GROUPs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hu Guowei 38
#2 Zhang Junbing 27
#3 Ma Liang 26
#4 Zhou Qiulai 24
#5 Yu Shanyi 21
#6 Liu Zhiru 21
#7 Xue Zemin 20
#8 Zheng Baocai 19
#9 Guo Xingliang 18
#10 Suyalatu 17

Latest patents

Publication Filing date Title
CN112211113A Cast-in-place construction method for large-span diamond-shaped bent cap of high pier
CN112160770A Tunnel reinforced concrete center ditch construction equipment and construction method thereof
CN112145214A Energy-saving ventilation method for newly-built tunnel construction based on existing railway tunnel and inclined shaft
CN112045841A Construction method of assembly type beam-making pedestal for prefabricating high-speed railway box beam
CN112045840A Construction method of assembly type beam storage pedestal for prefabricating high-speed railway box beam
CN112095652A Construction method of assembly type beam lifter foundation for high-speed railway box girder yard
CN112195995A Milling and excavating machine grooving early warning device
CN111779496A Novel subway shield tunneling portal gap plugging method
CN111779489A Large-section tunnel construction method for ^ C-shaped section civil air defense section
CN111847972A Anti-cracking reinforcing additive for pipe piece concrete and preparation method thereof
CN111673887A Release agent spraying method of pipe piece die
CN111878114A Repairing method for unfilled corner and cracked corner of shield segment
CN111873151A Die cleaning method for tube sheet die
CN111778960A Low-clearance water-rich sand-egg layer steel side mold secant pile construction method
CN111734445A Tunnel secondary lining concrete left-right synchronous window-by-window pouring system and method
CN111733709A Method for closing arched cable-stayed bridge beam in vertical rotation and downward rotation and bridge structure used in cooperation with method
CN111591318A Heavy haul train locomotive dynamics monitoring devices
CN111411769A Detachable integral large formwork for settlement joint of high-rise residential building and construction method
CN111251439A Automatic and unmanned production system and production method for double-block type sleeper
CN111411970A Shield starting construction method under water-rich sand layer geological condition