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ZHANG ZHUANGDOU

Overview
  • Total Patents
    39
  • GoodIP Patent Rank
    54,859
  • Filing trend
    0.0%
About

ZHANG ZHUANGDOU has a total of 39 patent applications. It increased the IP activity by 0.0%. Its first patent ever was published in 2005. It filed its patents most often in China, United States and Australia. Its main competitors in its focus markets environmental technology, chemical engineering and textiles and paper are TONGXIANG CITY XINNUO LEATHER & FUR CO LTD, JOHN BURCHILL and FENG AN LEATHER CO LTD.

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Zhang Zhuangdou 39

Latest patents

Publication Filing date Title
US2017233833A1 Leather production using waste liquids
AU2015271965A1 Tannery process with effluent recycling
CN106755625A The technology of skin is done using waste liquid
CN105779667A Leather manufacturing method achieving three-waste discharge reduction
CN103981300A Tanning technique for regularly filtering deashing and softening circulating wastewater
CN103981298A Tanning technique for regularly filtering soaking circulating wastewater
CN104005241A Tanning technique for filtering dyeing circulation wastewater at regular time
CN103981302A Tanning technique for regularly filtering retanning circulating wastewater
CN103981297A Tanning technique for regularly filtering neutralizing circulating wastewater
CN103981301A Tanning technique for regularly filtering pickling and tanning circulating wastewater
CN103981299A Tanning technique for regularly filtering reashing circulating wastewater
CN104004866A Leather preparing technology capable of periodically filtering circulating wastewater
CN103966370A Tanning technology for periodically filtering liming circulating wastewater
US2015176094A1 Tannery process with effluent recycling
CN104843807A Cycle engineering for realization of tanning waste water near-zero emission
CN104694675A Novel process for manufacturing leather with simple procedures and equipment
CN103525955A Tanning waste liquor stepwise recycling process with good effects
CN102559948A Sheepskin leather making process with infinite cycling of waste liquid for liming (or restoring ash alkalinity)
CN102534056A Tanning production process capable of recycling waste water repeatedly from soaking to dyeing
CN102041321A Leather manufacturing process by pickling and tanning salt-free and chrome-free recycled waste liquid