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LIU CHANGFEI

Overview
  • Total Patents
    32
  • GoodIP Patent Rank
    110,880
  • Filing trend
    ⇧ 150.0%
About

LIU CHANGFEI has a total of 32 patent applications. It increased the IP activity by 150.0%. Its first patent ever was published in 2005. It filed its patents most often in China. Its main competitors in its focus markets organic fine chemistry, environmental technology and materials and metallurgy are MAVROVIC I, HAN CONGPING and JIANGSU DAHUA CHEMICAL IND CO LTD.

Patent filings in countries

World map showing LIU CHANGFEIs patent filings in countries
# Country Total Patents
#1 China 32

Patent filings per year

Chart showing LIU CHANGFEIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liu Changfei 28
#2 Wang Yunhe 21
#3 Li Zhiwei 16
#4 Li Ke 7
#5 Li Li 2
#6 Wang Qingjie 2
#7 Li Li Wang 2
#8 Zhangfei Liu 2
#9 Li Lin 1
#10 Yunhe Wang 1

Latest patents

Publication Filing date Title
CN111713275A Integrated drill rod equipment for processing grain layer of granary
CN111960958A Method for preparing glycine from ethanol-water solvent solid chloroacetic acid
CN111646913A Preparation method of ammonia-process betaine
CN111517972A Preparation method of environment-friendly betaine
CN111470963A Method for preparing phenoxyacetic acid and 2, 4-dichlorophenoxyacetic acid
CN111196768A Method for preparing glycine by utilizing same ion effect
CN111116389A Method for preparing glycine by novel catalyst in water phase
CN111100020A Method for preparing glycine by using novel catalyst in mixed solvent method
CN111087316A Method for preparing glycine by using novel environment-friendly catalyst
CN109180508A A kind of method of electrodialytic membranes separation production glycine
CN109867608A A kind of process for cleanly preparing of glycine co-producing potassium chloride
CN109836344A A kind of method of organic solvent production glycine
CN105859571A Method for producing glycine by mixed solvent method
CN104478747A Method for producing glycine through organic solvent
CN105272864A Clean production process for glycine with combined production of calcium chloride by using triethylamine method
CN103524352A Method for recovering glycine acid-binding agent triethylamine employing triethylamine method
CN103420789A Method for processing triethylamine method glycine circulating mother liquid according to membrane separation technology
CN103351314A Cleaner production process for combined glycine and calcium sulfate
CN103570568A Clean production process of glycine in coproduction with ammonium chloride
CN103450039A Clean production technology for co-production of glycine and calcium chloride