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China coal zhangjiakou coal mining machinery co ltd

Overview
  • Total Patents
    209
  • GoodIP Patent Rank
    9,679
  • Filing trend
    ⇧ 9.0%
About

China coal zhangjiakou coal mining machinery co ltd has a total of 209 patent applications. It increased the IP activity by 9.0%. Its first patent ever was published in 2007. It filed its patents most often in China. Its main competitors in its focus markets packaging and shipping, civil engineering and environmental technology are MRAZ DENNIS, ALFRED EICKHOFF and RUDOLF MILIK.

Patent filings in countries

World map showing China coal zhangjiakou coal mining machinery co ltds patent filings in countries
# Country Total Patents
#1 China 209

Patent filings per year

Chart showing China coal zhangjiakou coal mining machinery co ltds patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhang Jianjun 30
#2 Mu Runqing 23
#3 Sun Lu 21
#4 Wang Ning 21
#5 Shao Caihong 20
#6 Ma Ying 20
#7 Wang Lijun 18
#8 Zhang Dening 16
#9 Zhang Wei 13
#10 Zhao Xiaodong 13

Latest patents

Publication Filing date Title
CN112279448A System and method for advanced treatment of high-turbidity mine water in coal mine
CN111927932A Self-cooling torque-limiting hydraulic coupler
CN112079619A Production process of impact-resistant wear-resistant cast stone
CN112108608A Molding process for producing large and medium steel castings by using water glass reclaimed sand
CN111828809A Inspection robot track for coal mine fully-mechanized coal mining face and rail passing method
CN111663942A Constant-pressure hydraulic control system for coal mining machine cable towing device
CN111594553A Programmable control's shaft coupling
CN111677843A Liquid quick plugging and plugging device and method for gearbox
CN111453376A Hydraulic dismounting mechanism for thin coal seam self-moving machine tail
CN111287789A Antiskid anchoring device for large-inclination-angle scraper conveyor
CN111252463A Mining crossheading coal-water separation device and crossheading scraper elevating conveyor
CN111156774A Intelligent cooling water comprehensive circulating system of crossheading transmission device
CN110937420A Automatic loading and bag stacking mechanism and loading method for coal chemical industry rail wagon
CN111041373A Medium Mn steel for chain wheel and preparation method and application thereof
CN110937327A Z-shaped bucket elevator
CN110957175A Quick-insertion type mounting mechanism and mounting method for mining switch vacuum contactor module
CN111022115A Arrangement method of front-lapping rear-end-unloading fully-mechanized caving face conveying and crushing equipment
CN111042858A Arrangement method of front-lap-joint rear-crossed fully mechanized caving face conveying and crushing equipment
CN110964976A Steel for chain wheel and preparation method and application thereof
CN110683284A Horizontal arc-shaped groove with guiding function