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LIANYUNGANG HUANGHAI MACHINERY CO LTD

Overview
  • Total Patents
    29
  • GoodIP Patent Rank
    113,180
About

LIANYUNGANG HUANGHAI MACHINERY CO LTD has a total of 29 patent applications. Its first patent ever was published in 2009. It filed its patents most often in China. Its main competitors in its focus markets civil engineering are BAKKEN BALL RETRIEVAL LLC, STRAND HARALD and YANCHENG RONGJIA MACHINERY MFG CO LTD.

Patent filings in countries

World map showing LIANYUNGANG HUANGHAI MACHINERY CO LTDs patent filings in countries
# Country Total Patents
#1 China 29

Patent filings per year

Chart showing LIANYUNGANG HUANGHAI MACHINERY CO LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Earth drilling

Top inventors

# Name Total Patents
#1 Ma Zengfu 9
#2 Zhang Xichao 9
#3 Chen Chiwu 6
#4 Wang Bing 5
#5 Liu Shenglin 4
#6 Duan Chunmei 4
#7 Wen Zhiguo 4
#8 Liu Wenjie 3
#9 Ma Songling 3
#10 Zhang Rong 2

Latest patents

Publication Filing date Title
CN105178862A Hole reaming and borehole enlarging device for exploitation of coalbed methane exploitation hole bottom
CN105089522A Drill pipe lifting liquid injection device for core drill
CN105003212A Hand control rotary arm type rope coring drill pipe clamp
CN104929588A Non-excavation underground buried pipe gas conveying device for coal bed gas exploitation
CN104832114A Hydraulic chuck of full-hydraulic drilling machine
CN104847285A Automatic rod feeding device for all-hydraulic drills
CN104594831A Integrated drill stem clamping and mounting-dismounting device for core drilling machine
CN104533309A Direct-connection type cross-section-variable high-low tooth rope coring drill rod
CN104481392A Vertical shaft core drill double chuck alternation rechuck device
CN104481418A Core drill output torque upper control limit drill rod
CN104389518A Telescopic mast type full-hydraulic core drilling machine
CN104358515A Guide drill rod for horizontal directional drilling machine
CN104358528A Alarming drill rod for drilling of horizontal directional drilling machine
CN104278958A Drill pipe transit box of drilling machine
CN104265157A Coal seam gas drilling rig power head tap device
CN103362437A Portal frame type core drilling machine
CN103233989A Pedaled hydraulic driving power-assisting clutch device
CN103195359A Hydraulic power head engineering driller
CN103174388A Nose end hydraulic control clamping device of full-hydraulic drilling machine
CN103147685A Multifunctional vertical shaft core drilling rig