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WU JIAHN-CHANG

Overview
  • Total Patents
    43
About

WU JIAHN-CHANG has a total of 43 patent applications. Its first patent ever was published in 2002. It filed its patents most often in United States and Taiwan. Its main competitors in its focus markets electrical machinery and energy, semiconductors and audio-visual technology are DAEWON INNOST CO LTD, SHANDONG PROSPEROUS STAR OPTOELECTRONICS CO LTD and HONG YUAN TECHNOLOGY CO LTD.

Patent filings in countries

World map showing WU JIAHN-CHANGs patent filings in countries
# Country Total Patents
#1 United States 27
#2 Taiwan 16

Patent filings per year

Chart showing WU JIAHN-CHANGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wu Jiahn-Chang 43

Latest patents

Publication Filing date Title
US2011012162A1 LED package with top and bottom electrodes
TW201018840A Airtight LED lamp with an internal circulating fan
TW200941865A Electronic module with chain lead switch
TW200938281A Lamp chess module
TW200933072A Back insertion type light module
TW200933075A Reflection type lamp
US2009080201A1 Waterproof module for LED lamp
US2007096275A1 Supporting frame for surface-mount diode package
US2007267964A1 Light unit with staggered electrodes
US2007215884A1 Backside accessible display
TW200733413A Matrix light display
TW200726418A Article insertion decoration tree
TW200725934A Light board with cassette light unit
US2007096132A1 Coaxial LED lighting board
TWI258879B Coaxial LED lighting board
TW200703682A Light emitting device package with single coaxial lead
US2006232179A1 Ballast for light emitting device
US2006232966A1 Light unit display
TWI257180B Light device with thin film resistor
TWI254262B Light unit display