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BEIJING HUAHAI MACHINERY CO LTD

Overview
  • Total Patents
    18
  • GoodIP Patent Rank
    91,979
About

BEIJING HUAHAI MACHINERY CO LTD has a total of 18 patent applications. Its first patent ever was published in 2015. It filed its patents most often in China. Its main competitors in its focus markets packaging and shipping, machine tools and mechanical elements are WUHU HUAJIE ENVIRONMENTAL PROT EQUIPMENT CO LTD, YUE BO and TANNETT-WALKER FREDERICK WILLI.

Patent filings in countries

World map showing BEIJING HUAHAI MACHINERY CO LTDs patent filings in countries
# Country Total Patents
#1 China 18

Patent filings per year

Chart showing BEIJING HUAHAI MACHINERY CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Du Jianhua 13
#2 Wang Jun 12
#3 Li Zhenyong 7
#4 Guo Saige 6
#5 Wang Yuling 5
#6 Jiao Jian 3
#7 Kang Mingming 3
#8 Han Piwei 3
#9 Li Qingguang 3
#10 Yang Shufang 2

Latest patents

Publication Filing date Title
CN111891650A Flat chain ring
CN111623148A Unloading valve and working method thereof
CN111618412A Electrode grinding device and working method
CN111608903A Liquid suction and discharge valve and working method thereof
CN111056227A Mining multi-strand large-specification heavy-load scraper chain conveyor
CN111022582A Large-contact-surface low-stress chain, braided core and preparation method
CN110925292A Spherical hinge device
CN110745681A Electromagnet magnetic crane and application thereof
CN110562757A Forging ring feed mechanism
CN110513344A Big flow inflatable overflow valve suitable for emulsion power pack system
CN110124546A Concentration of emulsion used monitors matching system on-line
CN108547817A Two-way repid cut-off valve
CN108747222A The Flash Butt Welding moulding process of compact chain noncircular cross section chain link
CN108580793A A kind of mining high intensity compact chain production method
CN108645327A A kind of chain monocycle v-notch Alignment measuring device and centering control method
CN104944067A Large-diameter chain transmission drafting device
CN104860075A Chain stacking device
CN105180773A Pitch length measuring device of chain