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HUNAN ZHONGCHUANG CHEMICAL CO LTD

Overview
  • Total Patents
    35
  • GoodIP Patent Rank
    86,127
  • Filing trend
    ⇧ 33.0%
About

HUNAN ZHONGCHUANG CHEMICAL CO LTD has a total of 35 patent applications. It increased the IP activity by 33.0%. Its first patent ever was published in 2007. It filed its patents most often in China, EPO (European Patent Office) and Brazil. Its main competitors in its focus markets organic fine chemistry, environmental technology and chemical engineering are TIANJIN BOHUA YONGLI CHEMICAL INDUSTRY CO LTD, US IND ALCOHOL CO and NIKL STANISLAV.

Patent filings per year

Chart showing HUNAN ZHONGCHUANG CHEMICAL CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hu Xiannian 17
#2 Liu Yudong 16
#3 Huang Nengwu 11
#4 Liu Lianghui 11
#5 Li Hua 10
#6 Shen Wenyi 8
#7 Zhang Xiaoming 7
#8 Li Xing 6
#9 Wang Kun 5
#10 Xiannian Hu 5

Latest patents

Publication Filing date Title
CN110862301A Sec-butyl alcohol refining method and device
CN109358057A A method of Ti content in measurement sec-butyl acetate device or sec-butyl alcohol device production sample
CN111377802A Preparation method and system of sec-butyl alcohol
CN111269095A Method and system for refining ethylene glycol tert-butyl ether
CN111269096A Method for preparing ethylene glycol tert-butyl ether
CN109956849A A kind of method preparing ethylene acetate and sec-butyl alcohol and catalyst system and device
CN109485548A A kind of method and device hydrolyzing preparation and separation sec-butyl alcohol by sec-butyl acetate
CN109232156A A method of preparing iso-amylene
CN107778151A A kind of method that sec-butyl alcohol dehydrogenizing prepares MEK
CN106631798A Method and device for separating impurities in sec-butyl acetate with methanol serving as azeotrope agent by adopting solvent recycling system
CN106631699A Method for preparing sec-butyl alcohol
CN106631684A Method for preparing SBA(sec-butyl alcohol) through hydrolysis with sec-butyl acetate
CN106631801A Method and device for separating impurities in sec-butyl acetate by using methanol as azeotropic agent
CN105111079A Method and device for separating acetic acid sec-butyl ester and sec-butyl alcohol
CN104496808A Method for separating unreacted C4 from mixture obtained from reacted acetic acid and C4
CN105801412A Method and system for recycling sec-butyl acetate in sec-butyl acetate preparation by-product heavy hydrocarbons having carbon number of 12 or more
CN105439822A A method of preparing tert-butanol from iso-butane
CN105367422A Method for preparing tert-butyl acetate from acetic acid and iso-butane
CN105363492A Catalyst used for synthesizing acetic ester through anhydride method and method for preparing acetic ester through catalyst
CN104744248A Method and device for preparing isopropyl acetate through reaction of propylene and acetic acid