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CHANG CHERNG

Overview
  • Total Patents
    20
About

CHANG CHERNG has a total of 20 patent applications. Its first patent ever was published in 1978. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and China. Its main competitors in its focus markets furniture and games, audio-visual technology and it methods for management are WELTEC B V, LEWIS NICK and BUSSE RIDO.

Patent filings in countries

World map showing CHANG CHERNGs patent filings in countries

Patent filings per year

Chart showing CHANG CHERNGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Chang Cherng 19

Latest patents

Publication Filing date Title
WO2012021152A1 Stock market filters
US2011320384A1 Stock market filters
US2011320383A1 Stock market filters
US2009265972A1 Sheet holders
US2007234602A1 Art sheets storage, display and retrieval systems
US2006174530A1 Spring-loaded holders
WO2006096353A2 Art sheets storage , display and retrieval systems
US2006255702A1 Art sheets storage, display and retrieval systems
WO2005023064A1 Art holders
US7140137B2 Spring loaded holders
US7117621B2 Three dimensional framed display and frame calendar
WO0005700A1 Frame
WO9601465A1 Frame calendar
US5213028A Multiple purpose cooking utensil system
US5154114A Multiple purpose cooking utensil system
US4377745A Mass spectrometer for chemical ionization, electron impact ionization and mass spectrometry/mass spectrometry operation
US4266127A Mass spectrometer for chemical ionization and electron impact ionization operation