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CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECH CO LTD

Overview
  • Total Patents
    12
  • GoodIP Patent Rank
    137,647
  • Filing trend
    ⇩ 100.0%
About

CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECH CO LTD has a total of 12 patent applications. It decreased the IP activity by 100.0%. Its first patent ever was published in 2017. It filed its patents most often in China. Its main competitors in its focus markets measurement, machine tools and electrical machinery and energy are MEGGER INSTRUMENTS LTD, QINGDAO HANTEK ELECTRONIC CO LTD and LANDIS GYR LLC.

Patent filings in countries

World map showing CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECH CO LTDs patent filings in countries
# Country Total Patents
#1 China 12

Patent filings per year

Chart showing CHANGSHA TUNKIA MEASUREMENT AND CONTROL TECH CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Zhou Xinhua 12
#2 Qiu Quanfeng 3
#3 Zhou Shugen 3
#4 Zeng Kai 3
#5 Shu Ziqi 1
#6 Ye Shaohua 1
#7 Yao Xingmao 1
#8 Li Guanren 1
#9 Huang Qiyu 1
#10 Cao Wei 1

Latest patents

Publication Filing date Title
CN112098703A High-frequency voltage precise isolation amplifier
CN111856371A Device for realizing high-frequency orthogonal 90-degree phase standard
CN111628638A Electrical isolation device and method for accurately converting alternating current and direct current voltages
CN111208346A Small signal voltage measuring device and method
CN111245390A Ultralow-noise microvolt adjusting device
CN111157925A Method and device for measuring large-range B-H loop of soft magnetic material
CN111044963A High-frequency current sensor calibration method and device adopting coaxial shunt
CN110082396A The measuring device and automatic checkout system of electrical sheet surface insulation resistance
CN107422155A Current element measurement attachment structure
CN107064637A Electrical sheet surface insulation resistance measurement apparatus
CN106925812A For the unpowered drill of electrical sheet surface insulation resistance measurement apparatus
CN106872923A Light beam positions the device and method of magnetic center