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DU NINGJUN

Overview
  • Total Patents
    13
  • GoodIP Patent Rank
    140,848
About

DU NINGJUN has a total of 13 patent applications. Its first patent ever was published in 2012. It filed its patents most often in China. Its main competitors in its focus markets chemical engineering, environmental technology and control are MOLL HANS GEORG, SOFI FILTRATION OY and GEIGER EUGEN.

Patent filings in countries

World map showing DU NINGJUNs patent filings in countries
# Country Total Patents
#1 China 13

Patent filings per year

Chart showing DU NINGJUNs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 The Inventor Has Waived The Right To Be Cited 7
#2 Du Yebing 5
#3 Du Ningjun 5
#4 Gu Yinqi 1
#5 Cai Tianjiao 1

Latest patents

Publication Filing date Title
CN111921382A Remote switching method for pre-filter liner filtering and back-flushing channel of water purifier
CN112130477A Water purifier provided with double-control electric control device and upper cover with lifting structure mode
CN111841131A Capping device of water purifier with upper control module and lower filter container bin
CN111974073A Water purifier with vertical shifting device for controlling upper control module to move and filter liner
CN111974074A U-shaped filter container bin and upper cover movably-connected water purifier with built-in upper control module
CN111841128A Water purifier with U-shaped module with cover lifting device and lower filter container cabin connected in plug mode and filter container
CN111841129A Capping device of water purifier with upper control module and lower filter container bin
CN111841130A Water purifier with U-shaped module with cover lifting device and lower filter container cabin spliced with water purifier and filter container
CN111847587A Lower water collection type filter chamber matched and movably connected with upper control module of water purifier
CN111773810A Waterway base structure of vertical insertion type water passing control component for water purifier
CN111777131A Water purifier with translation cover device
CN111773813A Loose joint matching device for upper control module and lower filter liner bin of water purifier
CN103306718A Rescue method of crawler belt rescue cabin in water penetration of underworkings