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HUNAN HENGZHI ROCK DRILLING TECHNOLOGY CO LTD

Overview
  • Total Patents
    14
  • GoodIP Patent Rank
    150,635
About

HUNAN HENGZHI ROCK DRILLING TECHNOLOGY CO LTD has a total of 14 patent applications. Its first patent ever was published in 2010. It filed its patents most often in China. Its main competitors in its focus markets civil engineering are OCEAN RISER SYSTEMS AS, LEDENT PIERRE and BEIJING ORION ENERGY TECHNOLOGY DEV CO LTD.

Patent filings in countries

World map showing HUNAN HENGZHI ROCK DRILLING TECHNOLOGY CO LTDs patent filings in countries
# Country Total Patents
#1 China 14

Patent filings per year

Chart showing HUNAN HENGZHI ROCK DRILLING TECHNOLOGY CO LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering

Focus technologies

# Technology
#1 Earth drilling
#2 Mining

Top inventors

# Name Total Patents
#1 Luo Youxin 11
#2 Wen Huijun 9
#3 Wang Weifen 9
#4 Zhou Yu 7
#5 Huijun Wen 3
#6 Hengshu Li 3
#7 Yu Zhou 3
#8 Youxin Luo 3

Latest patents

Publication Filing date Title
CN105275390A Single-arm double-drill hydraulic drill carriage
CN105275392A Hydraulic drill carriage having good dustproof effects
CN104712250A Deviation feedback device for drill rod of hydraulic drill carriage
CN104763325A Hydraulic drill carriage drill arm moving fulcrum metamorphic mechanism
CN104727766A Automatic synchronizing device of hydraulic drill carriage drill rod
CN104747093A Drill boom sliding metamorphic mechanism of hydraulic drill carriage
CN104727754A Hydraulic drill carriage drill arm adding connecting rod metamorphic mechanism
CN104763358A Hydraulic drill rig propulsion and rotation feedback synchronization device
CN104763422A Hydraulic drill rig dust collecting pipeline automatic dust removal device
CN104763420A Hydraulic drill rig coarse filter linked slag discharge device
CN104763421A Hydraulic drill rig dust catching hood lifting metamorphism mechanism
CN102168522A Drill rod rotating mechanism of rock drill connected by tooth profile shaped surface of swing active gear
CN101936140A Drilling machine advancing mechanism for profile connection of eccentric wheel push rod roller oscillating tooth inner gear profile
CN101906931A High-order elliptic surface connection and drilling machine propelling mechanism using same