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LIU CHANGGUI

Overview
  • Total Patents
    14
  • GoodIP Patent Rank
    226,301
About

LIU CHANGGUI has a total of 14 patent applications. Its first patent ever was published in 1989. It filed its patents most often in China and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets electrical machinery and energy, measurement and environmental technology are MSM TECH CO LTD, DONGGUAN PERFECT SCI & TECH CO and HONG SAM PYO.

Patent filings in countries

World map showing LIU CHANGGUIs patent filings in countries

Patent filings per year

Chart showing LIU CHANGGUIs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Liu Changgui 10
#2 Changgui Liu 4

Latest patents

Publication Filing date Title
CN110632644A Earth vibration thing predictor
CN104407376A Earthquake prediction system
CN103071181A Hydrogel as well as preparation method and purpose of hydrogel
CN102155645A LED (light emitting diode) fluorescent lamp and fluorescent lamp connecting circuit
CN102155642A LED (light emitting diode) daylight lamp and connecting circuit thereof
CN102155644A LED (light emitting diode) fluorescent lamp and fluorescent lamp connecting circuit
CN102155643A LED (Light Emitting Diode) fluorescent lamp and fluorescent lamp connecting circuit
CN102155649A Light-emitting diode (LED) fluorescent lamp and connecting circuit thereof
CN101825243A Method for manufacturing lamp belt and lamp belt
CN1091803A Bicycle puzzle lock controlled by dual kinds of keys
CN1086452A Military chess
CN1082450A Intellectual recreation product is arranged---the Heavenly Stems board
CN1045622A Lightweight coloured glaze rainwater pipe (being commonly called as water leaks)