Inventor · disambiguated record

Chang Sub Jeon

Also filed as: JEON CHANG SUB

1 granted patent·2 citations·filing 2017–2017

17Inventor score

Technology areasG06Q

Files withJEON CHANG SUB1

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1 record

0163US10812425B2Method and system for providing quiz together with advertisement in instant message service (IMS) chat roomJEON CHANG SUB·Filed 2017·Granted Oct 20, 2020·2 cites·27 claims

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Chang Sub Jeon — Patent Inventor | PatentIndex