Learn more

CHANGZHI QINGHUA MACH FACTORY

Overview
  • Total Patents
    192
  • GoodIP Patent Rank
    12,286
  • Filing trend
    ⇩ 100.0%
About

CHANGZHI QINGHUA MACH FACTORY has a total of 192 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 2006. It filed its patents most often in China. Its main competitors in its focus markets machine tools, packaging and shipping and mechanical elements are BENGBU YELI MACHINERY CO LTD, KIM JIE HO and BRATISLAVSKE ELEKTROTECHNICKE.

Patent filings in countries

World map showing CHANGZHI QINGHUA MACH FACTORYs patent filings in countries
# Country Total Patents
#1 China 192

Patent filings per year

Chart showing CHANGZHI QINGHUA MACH FACTORYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Li Yugui 24
#2 Liu Yong 21
#3 Wang Wei 19
#4 Li Haiyan 18
#5 Yugui Li 16
#6 Peixia Xu 16
#7 Wang Jinqiang 14
#8 Song Yongzhong 14
#9 Wang Wukui 14
#10 Wang Ruimin 13

Latest patents

Publication Filing date Title
CN107779936A Inner hole of cylinder hard chromium plating device
CN107777375A First carry rear turning type turn-down rig
CN107775246A Pin sleeve positioning welding process unit
CN107553095A Internal-expansion type locking cylinder special horizontal fills cylinder machine
CN107600847A Pit type flow-type refuse depot
CN107575548A Servo control mechanism corner precise adjusting device
CN107585484A The traversing platform of ground pit type Mobile garbage station
CN107607556A Multistage plays the Inner surface test method of perpendicular hydraulic jack cylinder barrel
CN107387501A Large-diameter multistage lifting hydraulic cylinder clamping and positioning device
CN107327446A Large-stroke multistage lifting hydraulic cylinder tests guider
CN107327445A Large-stroke multistage lifting hydraulic cylinder counterweight load test technological equipment
CN107380623A Big carrying steel wood composite construction transport package box
CN107340128A Cleanninfg brushes experimental rig
CN107337141A Manual apparatus for automatically lifting with auto-lock function
CN107421968A A kind of X ray inclined combination cloth shines detection method
CN107505338A Visual, the spacing device of X ray transillumination field
CN107491039A A kind of process technology for ensureing servo valve body inner bore axiality
CN107512227A The sequential telescopic formula access step of adjustable in length
CN107377688A The school circle device of major-diameter thick-wall aluminum barrel
CN107313370A Safety stop lever with microwave sounding