Learn more

XI AN BRANCH OF CHINA COAL RES INST

Overview
  • Total Patents
    23
About

XI AN BRANCH OF CHINA COAL RES INST has a total of 23 patent applications. Its first patent ever was published in 2007. It filed its patents most often in China. Its main competitors in its focus markets mechanical elements are JIANGYING FENGCHENG CO LTD, DAI ICHI SOKUHAN WORKS and ASTI L.

Patent filings in countries

World map showing XI AN BRANCH OF CHINA COAL RES INSTs patent filings in countries
# Country Total Patents
#1 China 23

Patent filings per year

Chart showing XI AN BRANCH OF CHINA COAL RES INSTs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Mechanical elements

Focus technologies

# Technology
#1 Gearing

Top inventors

# Name Total Patents
#1 Zhijun Shi 7
#2 Ningping Yao 7
#3 Xinsheng Yin 6
#4 Baoshan Sun 5
#5 Ke Yao 5
#6 Youzhen Zhang 4
#7 Qun Zhang 4
#8 Hongliang Tian 4
#9 Yi Wang 4
#10 Quanxin Li 3

Latest patents

Publication Filing date Title
CN102116167A Ground and underground three-dimensional extraction system of coal seam gas
CN102116140A Construction method for enhancing extraction effect of ground coal bed gas
CN102102538A Orifice data processing device for coal mine underground measurement while drilling
CN102094582A Processing method of bimetallic oil distributing sleeve for full-hydraulic drilling machine
CN102022090A Nitrogen spring type drilling machine hydraulic chuck
CN102022317A Water absorption and drainage device for high stroke frequency liquid-driven slurry pump
CN102031950A Hole-forming process method for comb gas extraction borehole in coal seam roof
CN101775965A Open-top composite clamp holder
CN101799466A Physical simulation device and simulation method for coal bed methane production
CN101769134A Sealed core drilling device for underground coal seams and application method thereof
CN101877020A Method for drawing drilling track graph in AutoCAD by using VBA module
CN101709642A Track-type four-arm rock drilling jumbo
CN101709623A Integral coal mine drilling machine hydraulic system capable of satisfying multiple drilling modes
CN101709774A Automatic lubrication device for planet wheel bearing
CN101936139A Integrated wind-blade spiral drilling rod for air pressure drilling
CN101538989A Quick-change slips hydraulic rubber cylinder chuck
CN101498220A Vertical shaft working surface artesian flow sand layer slurry protecting rotary spraying grouting process
CN101446178A Wind pressure air drilling equipment in downhole soft outbursting coal bed and process matched therewith
CN101343997A Directional tool of horizontal long drill hole
CN101345591A Portable terrane communication machine