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CHANGSHA ENGINEERING & RES INS

Overview
  • Total Patents
    21
  • GoodIP Patent Rank
    164,542
About

CHANGSHA ENGINEERING & RES INS has a total of 21 patent applications. Its first patent ever was published in 2008. It filed its patents most often in China. Its main competitors in its focus markets environmental technology are LVIVSKA POLYTECHNIKA NAT UNIVERSITY, TIANJIN MROGAN KUNDOM HI TECH DEV CO LTD and OPEN JOINT STOCK COMPANY ALCHE.

Patent filings in countries

World map showing CHANGSHA ENGINEERING & RES INSs patent filings in countries
# Country Total Patents
#1 China 21

Patent filings per year

Chart showing CHANGSHA ENGINEERING & RES INSs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Chen Fudong 4
#2 Guanghong Huang 3
#3 He Xingmin 3
#4 Dong Xiaowei 3
#5 Shu Jianyi 3
#6 Zhang Chengsong 3
#7 Zuo Xiaohong 3
#8 Xueqing Peng 3
#9 Xiaojian Li 2
#10 Deng Mengli 2

Latest patents

Publication Filing date Title
CN104004923A Method for extracting zinc by combination of roasting leaching and direct leaching of zinc sulfide concentrate
CN103994438A Burner of reverberatory furnace
CN103952546A Steam heating device and method for pressurized oxygen leaching of zinc sulfide concentrate
CN103952538A Roasting method for stone coal navajoite in manners of lifting, adjusting air and supplying heat
CN103911506A Lifting, air-regulating, heat-replenishing, roasting and decarburizing method of carbon-containing gold mine
CN103924098A Wet lead continuous refining furnace and refining method
CN103866120A Method for leaching zinc and recovering valuable metals through carrying out pressurized oxidation on zinc sulfide concentrates
CN103866132A Process for recovering mercury from non-ferrous metal smelting exhaust gas
CN103833048A System and method for rapid preparation of ammonia water
CN103821520A Method for fixing mine vertical shaft device
CN102853937A Device for measuring multipoint temperature of surface of pipe system by temperature sensing optical wire in alumina dissolve out process
CN102618720A Method for backwash leaching and washing mineral leached materials
CN101787731A Industrial pipe culvert/tunnel gap leakage sealing method
CN101762161A Hearth of oxygen side blown converter
CN101734626A Method for recovering sulfur element from zinc sulphide concentrate direct leaching residues
CN101705352A Ore crushing method
CN101695754A Method for preparing mixture for use in production of submicrometer hard alloy
CN101539317A Assembling unit for filtering, heating and blowing and configuration method thereof
CN101474592A Coarse-size separation technique
CN101445302A Method for processing sulfuric acid wastewater containing high-content arsenic and multiple contaminants