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ZHENGZHOU COAL MINING MACH GR

Overview
  • Total Patents
    119
  • GoodIP Patent Rank
    22,390
  • Filing trend
    ⇧ 111.0%
About

ZHENGZHOU COAL MINING MACH GR has a total of 119 patent applications. It increased the IP activity by 111.0%. Its first patent ever was published in 2009. It filed its patents most often in China. Its main competitors in its focus markets machine tools, civil engineering and environmental technology are JIANGSU RUICHENG MACHINERY CO LTD, CHINA RAILWAY ENGINEERING EQUIP GROUP SHIELD MFG CO LTD and SHANDONG TAGAO MINING EQUIPMENT MFG CO LTD.

Patent filings in countries

World map showing ZHENGZHOU COAL MINING MACH GRs patent filings in countries
# Country Total Patents
#1 China 119

Patent filings per year

Chart showing ZHENGZHOU COAL MINING MACH GRs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Yongqiang Wang 28
#2 Jianmin Cui 25
#3 Cheng Xiangbang 25
#4 Youjin Gao 21
#5 Meng Hechao 21
#6 Li Fuyong 20
#7 Yang Wenming 19
#8 Zhang Jiye 16
#9 Guanghui Zhao 15
#10 Chen Ge 14

Latest patents

Publication Filing date Title
CN112169612A Self-cleaning emulsion system for hydraulic support production and self-cleaning method
CN112191989A Method for welding fillet weld of hydraulic support through large penetration depth of robot
CN112059371A Automatic welding method for narrow groove of hydraulic support structural part
CN112059545A Method for controlling laser cladding deformation of slender piston rod
CN112059367A Method for welding metal powder-cored welding wire on hydraulic support structural member in vertical direction
CN111951634A Simulation training device for hydraulic support
CN112059366A Method for automatically welding flux-cored wire in vertical direction of hydraulic support structural part
CN111473014A Electro-hydraulic multi-speed control system for near-water medium
CN111473013A Electro-hydraulic multi-speed buffer valve for near-water medium
CN110540146A Pushing jack easy for replacing magnetic ring under coal mine
CN110487075A Groove type ellipse mouth well formula gas furnace
CN110439601A Excavation support with transfer function
CN110469352A Excavation support with function of removing obstacles
CN110328496A Improve the manufacturing method of Barrel of Hydraulic Cylinders service life
CN110273701A Shock resistance triple retractable column for hydraulic support
CN110344869A Coal mine crossheading temporary airtight excavation support
CN110238417A Boring machine suitable for large-sized structural parts presss from both sides indexable tool
CN110039262A Control valve seat and deep hole type cylinder barrel first weld after processing method
CN110077849A The dedicated handgrip mechanism of hydraulic support gonnecting rod body
CN109909583A Multi-layer multi-pass welding method of the arc welding robot in hydraulic support welding