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QINGDAO HEDELONG MACHINERY CO LTD

Overview
  • Total Patents
    63
  • GoodIP Patent Rank
    209,330
  • Filing trend
    ⇩ 100.0%
About

QINGDAO HEDELONG MACHINERY CO LTD has a total of 63 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 2009. It filed its patents most often in China. Its main competitors in its focus markets materials and metallurgy, surface technology and coating and environmental technology are GEORG FISCHER DISA AS, LORAMENDI SA and HUNTER AUTOMATED MACH CORP.

Patent filings in countries

World map showing QINGDAO HEDELONG MACHINERY CO LTDs patent filings in countries
# Country Total Patents
#1 China 63

Patent filings per year

Chart showing QINGDAO HEDELONG MACHINERY CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chang Yunqing 62
#2 Zhai Zhaowu 11
#3 Chang Yulin 8
#4 Chang An 5
#5 Xue Jie 5
#6 Li Yunkun 5
#7 Liu Chenglin 4
#8 Li Zhongxin 4
#9 Dai Yungang 3
#10 Liu Jun 2

Latest patents

Publication Filing date Title
CN107639206A Resin sand flow mixer and mulling method
CN107842624A Anti-blocking knife valve base can be cleared up
CN105457858A Electrostatic powder spraying method for valve casting
CN104550769A Casting production technology of valve body casting
CN104550740A Method for casting large thin-wall rotation body high strength aluminum alloy casting
CN104550722A Process for casting evanescent mould of blast furnace cooling wall
CN104550754A Casting production method of shift fork casting
CN104550840A High-pressure counter-pressure casting method of high strength-toughness high-density aluminum-silicon alloy
CN104550705A Casting method of large stamping air cylinder casting
CN104550721A Evaporative pattern casting process for fuel oil engine cylinder cover
CN104550773A Casting production process for belt wheel casting
CN104550772A Method for casting wind generator hub casting
CN104550739A Casting technology of cylinder cover and engine body components of diesel engine
CN104550767A Casting technology of high-alloy steel sheet metal parts with holes and ribs
CN104550853A HVHSS (high-vanadium high-speed steel) composite hammer head casting technology
CN104550768A Magnesium alloy intake manifold metal type tilted casting technology
CN104550763A Casting process of complex aluminum alloy housing casting
CN104550839A Aluminizing hot tinning aluminum iron bi-metal low-pressure casting process
CN104550852A Ferro-aluminum bimetal casting technology
CN104550981A Method for preparing nanometer CeO2/Zn (cerium oxide/zinc) metal-based composite material in zinc galvanizing layer