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WUZHONG INSTR CO LTD

Overview
  • Total Patents
    135
  • GoodIP Patent Rank
    13,637
  • Filing trend
    ⇩ 50.0%
About

WUZHONG INSTR CO LTD has a total of 135 patent applications. It decreased the IP activity by 50.0%. Its first patent ever was published in 2001. It filed its patents most often in China, WIPO (World Intellectual Property Organization) and United States. Its main competitors in its focus markets mechanical elements, machine tools and measurement are CHAODA VALVE GROUP CO LTD, FUNING ZHONGZHOU VALVE CO LTD and JIANGSU SHENTONG VALVE CO LTD.

Patent filings in countries

World map showing WUZHONG INSTR CO LTDs patent filings in countries

Patent filings per year

Chart showing WUZHONG INSTR CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ma Yushan 102
#2 Chang Zhandong 58
#3 Jia Hua 34
#4 Li Husheng 30
#5 Zhou Yongxing 26
#6 Zhao Wenbao 17
#7 Liu Haibo 17
#8 He Tao 16
#9 Yu Shaohua 14
#10 Yushan Ma 13

Latest patents

Publication Filing date Title
CN112283441A Use method of multistage expansion curing device for inner cavity of control valve stem packing box
CN112283440A Straight-stroke material loss-free high-temperature normal-pressure packing sealing structure
CN112283383A Rotary ball core descaling mechanism
CN112276053A 3D rapid positioning tool for casting head cutting and operation method thereof
CN112276682A Method for uniformly processing macroscopic hardness of ball valve vacuum cladding ball core
CN112283439A Straight stroke gradient packing sealing structure
CN111365615A Valve static pressure life automatic testing device based on gasification pressurization
CN111237484A Ultralow-temperature low-leakage high-pressure balanced type regulating valve
CN111250714A Method and tool for cladding nickel-based alloy in inner hole of thin-wall small-caliber pipe
CN111059304A Multi-channel regulating valve
CN110864157A Actuating mechanism for safety shut-off valve
CN111062099A Equal-radius search based blade profile mean camber line construction method
CN110848399A Low flow resistance zero leakage control valve
CN110411882A Multi-state simulation inside pipe wall frictional wear test device
CN110513529A High thrust top fills handwheel
CN110411737A Evaluation valve friction and wear behavior and the method for predicting service life under a kind of simulation working condition
CN110238007A The preparation method and preparation cooling device of high-end ball valve ball core surface cladding coating
CN110201823A The core coating uniformity measuring instrument of free removal spraying inner support tooling
CN110181136A Tab (s) formula labyrinth valve cage mounted structure method for welding
CN110220652A Deep-sea gate valve seat sealing reliability dynamic simulant test device