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ZHENJIANG ZHENGHAN PUMP CO LTD

Overview
  • Total Patents
    21
About

ZHENJIANG ZHENGHAN PUMP CO LTD has a total of 21 patent applications. Its first patent ever was published in 2006. It filed its patents most often in China. Its main competitors in its focus markets environmental technology and engines, pumps and turbines are China chengda engineering co ltd, JI YUCHENG and GUIZHOU CHITIANHUA CO LTD.

Patent filings in countries

World map showing ZHENJIANG ZHENGHAN PUMP CO LTDs patent filings in countries
# Country Total Patents
#1 China 21

Patent filings per year

Chart showing ZHENJIANG ZHENGHAN PUMP CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Qingyu Yao 12
#2 Chunlin Wang 9
#3 Xiangyun Chen 8
#4 Zhenyu Yin 4
#5 Yu Wei 3
#6 Yao Qingyu 3
#7 Yong Zhang 3
#8 Yin Zhenyu 3
#9 Sun Aijun 3
#10 Aijun Sun 2

Latest patents

Publication Filing date Title
CN102966555A Explosion-proof high-efficiency powerful self-priming device with explosion-proof oil-less rotary vane-type vacuum pump
CN102966556A Explosion-proof high-efficiency powerful self-priming device with explosion-proof water-ring vacuum pump
CN102937097A Anti-explosion vertical type self-sucking pump
CN102444613A Looseness-preventing mechanism in reversion of pump impeller
CN102536873A Installation structure of vertical self-priming pump on chemical tank
CN102536886A Halogen delivering pump impeller with salt deposition resistance
CN101776087A Rotation shell pump adopting spiral labyrinth dynamic seal
CN101776094A High-efficiency spiral shell pump with symmetrical wing type flow-collecting pipe
CN101592155A Small-flow high-delivery-lift submerged multi-stage centrifugal pump
CN101592147A Oil-field flooding specialized high-speed, high pressure and deep well pump
CN101509491A Special long shaft underwater halogen transmitting pump
CN101476557A Brine pump for well and method for fast eliminating internal crystallization of brine pump
CN101446296A Vertical self-priming pump valve-free self-antisiphoning device
CN101408162A Strong self-priming full-automatic vacuum extractor for pump
CN101392767A Vertical halogen transmission pump for removing crystal in pump by freshwater soaking
CN101349275A Explosion suppression diving sewage water electric pump for landification
CN101349285A Method and structure for preventing explosion-proof submerged sewage pump orifice form generating friction spark and high temperature
CN101349279A Method for improving diving sewage water electric pump operation reliability and diving sewage water electric pump thereof
CN101187378A Underground brine collection and transport dedicated pump and its production method
CN101008404A Installation method of vertical bittern transfer pump