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WU WEN-CHANG

Overview
  • Total Patents
    30
About

WU WEN-CHANG has a total of 30 patent applications. Its first patent ever was published in 2001. It filed its patents most often in Canada, United States and United Kingdom. Its main competitors in its focus markets electrical machinery and energy and machines are HOFFMEISTER LEUCHTEN KG, CHOCOLATE LIGHTING COMPANY LTD and MODULEX INC.

Patent filings in countries

World map showing WU WEN-CHANGs patent filings in countries

Patent filings per year

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

Focus industries

Top inventors

# Name Total Patents
#1 Wu Wen-Chang 30
#2 Wu Yu-Chao 1

Latest patents

Publication Filing date Title
WO2009094806A1 Improved led lamp holder
US2006120087A1 Structure disassembly-type lamp shade
US2006092645A1 Structure rapid assembly/disassembly lamp shade
US6986680B2 Conductive wire insertion device for installing a lamp rod
US7001040B2 Locking structure of ceiling lamp for locking ceiling lamp to wire winding box
US6971774B2 Insertion structure for inserting lamp rod to wire winding box
US6948833B2 Ceiling lamp suspending device
CA2430569A1 Do-it-yourself lamp connecting structure
US2006146547A1 Lamp hanging structure
GB0310918D0 An electrical connection system for a multi-arm ceiling lamp
US7097325B2 Easily detachable lamp assembled device
CA2418873A1 Multi-positioning ceiling lamp
US2004142595A1 Connector between lamp rod and lamp base
CA2410215A1 Improved do-it-yourself lamp structure
US6715906B1 Do-it-yourself pendant lamp structure
GB0224562D0 Modular lamp structure
GB0217216D0 Disconnectable lamp structure
GB0217213D0 Simple lamp assembling structure
GB0201276D0 Plug and socket arrangement for connecting the arms and body of a chandelier
CA2366628A1 Improved structure two-level ceiling lamp frame junction box