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SICHUAN NORTH HONGGUANG SPECIAL CHEMICAL CO LTD

Overview
  • Total Patents
    22
  • GoodIP Patent Rank
    72,811
  • Filing trend
    ⇩ 33.0%
About

SICHUAN NORTH HONGGUANG SPECIAL CHEMICAL CO LTD has a total of 22 patent applications. It decreased the IP activity by 33.0%. Its first patent ever was published in 2014. It filed its patents most often in China. Its main competitors in its focus markets organic fine chemistry, environmental technology and measurement are JIANGSU XINHE AGRICULTURAL CHEMICAL CO LTD, HENAN HONGDONGFANG CHEMICAL CO LTD and USTAV CHEMICKYCH PROCESU AV CR V V I.

Patent filings in countries

World map showing SICHUAN NORTH HONGGUANG SPECIAL CHEMICAL CO LTDs patent filings in countries
# Country Total Patents
#1 China 22

Patent filings per year

Chart showing SICHUAN NORTH HONGGUANG SPECIAL CHEMICAL CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhang Jianqin 9
#2 Du Chengping 9
#3 Huang Qingwu 8
#4 Feng Gang 7
#5 Xiang Yong 6
#6 Pu Zulun 6
#7 Ning Ping 5
#8 Liu Chuangang 4
#9 Chen Jiujun 4
#10 Jiang Neng 4

Latest patents

Publication Filing date Title
CN111686482A DNB waste drug recovery system
CN111646905A Process for separating and purifying m-dinitrobenzene from mixed dinitrobenzene
CN111689541A Safe concentration process and concentration system for nitrophenol sodium salt wastewater
CN111692604A Treatment method and treatment system for nitrophenol waste solids
CN111662182A Method for producing phenylenediamine by dinitrobenzene solvent-free hydrogenation continuous reaction
CN111792997A Process method for improving waste acid curing
CN110511150A A method of preparing high-purity polymer grade m-phenylene diamine (MPD)
CN110511146A The production method and its production system of a kind of low single nitro ortho-xylene of waste acid quantity
CN110478951A A kind of technique and catalyst settler increasing catalyst sedimentation
CN110467534A A kind of technique of the solvent-free catalytic hydrogenation synthesis phenylenediamine of dinitrobenzene
CN109085274A A method of using liquid chromatography for measuring phenylenediamine
CN109232318A A kind of new process producing o-chloro benzonitrile
CN108059181A A kind of method of harmless treatment type organic containing nitro calcium sulfate
CN108107136A A kind of method of pseudocuminol content in high performance liquid chromatography detection 2,5- xylenols
CN108129255A A kind of method and device of ortho-chlorotolu'ene synthesis o-chlorotrichlorotoluene
CN106370610A Method of detecting content of trace phenol in nitro-o-xylene
CN106442760A Method for detecting trace organic substances in ammonium sulfate
CN105439365A Treatment process for waste water emission reduction
CN105445334A Restoration method of thermal conductivity cell of thermal conductance analyzer
CN104072383A Method for preparing 3-amino-2-methyl benzoic acid