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CHANG CHU-CHENG

Overview
  • Total Patents
    16
  • GoodIP Patent Rank
    237,174
About

CHANG CHU-CHENG has a total of 16 patent applications. Its first patent ever was published in 2000. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets electrical machinery and energy and semiconductors are TRAXON TECH LTD, SEASONS 4 INC and YANG CHEN-SHENG.

Patent filings in countries

World map showing CHANG CHU-CHENGs patent filings in countries
# Country Total Patents
#1 United States 8
#2 Canada 5
#3 United Kingdom 3

Patent filings per year

Chart showing CHANG CHU-CHENGs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Chang Chu-Cheng 16
#2 Chang Chen-Tao 14
#3 Chang Chen-Hsien 14
#4 Chang Cheng-Fen 14
#5 Chang Zheng-Dao 2
#6 Chang Zheng-Xian 2

Latest patents

Publication Filing date Title
US2015216005A1 Light string
US2010207533A1 Light string with alternate LED lamps and incandescent lamps
US2010148694A1 LED light string with capacitor based rectifier filter for increasing output voltage
US2010109553A1 Led bulb with zener diode, zener diode assembly or resistor connected in series
CA2643547A1 Led light string with capacitor based rectifier filter for increasing output voltage
US2010102735A1 Led light string with zener diodes or resistors as shunts
CA2644103A1 Led bulb with zener diode, zener diode assembly or resistor connected in series
CA2642476A1 Led light sting with zener diodes or resistors as shunts
US2010079076A1 LED light string without additional resistors
CA2639987A1 Led light string without additional resistors
US2009322236A1 Christmas light string with LED bulb loop and incandescent light bulb loop
GB0808647D0 Light string comprising both light emitting diodes and incandescent bulbs
US2008218092A1 Christmas light string with socket for connecting to another christmas light string
GB0701407D0 Christmas light string with socket for connecting a further light string
GB0024857D0 Light bulb and socket adapter assembly