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ZHANG CHANGWEI

Overview
  • Total Patents
    11
  • GoodIP Patent Rank
    184,859
About

ZHANG CHANGWEI has a total of 11 patent applications. Its first patent ever was published in 1994. It filed its patents most often in China. Its main competitors in its focus markets environmental technology, agriculture and medical technology are TAKADA SHUNSUKE, SHANGHAI TAIHE WATER ENVIRONMENT TECH DEVELOPMENT CO LTD and ROCHE STEPHEN D.

Patent filings in countries

World map showing ZHANG CHANGWEIs patent filings in countries
# Country Total Patents
#1 China 11

Patent filings per year

Chart showing ZHANG CHANGWEIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhang Changwei 9
#2 Feng Shuiqing 1
#3 Zhang Xiaomin 1
#4 Changwei Zhang 1
#5 Zhang Changwei Liu 1
#6 Zhang Rui 1
#7 Feng Zhen 1
#8 Qi Qin 1
#9 Wang Xianyun 1
#10 Zhang Fengyuan 1

Latest patents

Publication Filing date Title
CN111875109A Sewage treatment plant is used to agricultural
CN111875176A Sewage treatment device
CN110664579A Neurology examination lifting device
CN110313425A A kind of cultural method of lamnaeid
CN110338110A A kind of method that barrel shape net cage supports leech
CN110292005A A kind of plane high density hirudiniculture method
CN110292006A A kind of cultural method of Pomacea canaliculata
CN103600807A Commutation transmission capable of allowing bicycle to be pedaled both frontwards and backwards
CN1865635A Underground cemetery
CN1436500A Metallic furniture
CN1114352A Process for producing bottled wine with whole fruit in bottle