Individual holder
CHANG IFAY F
US·4 granted patents·119 citations·filing 2000–2008
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
4 records- 0194US8138886B1Communication enabled active lock systemCHANG IFAY F·Filed 2008·Granted Mar 20, 2012·40 cites·15 claims
- 0287US7065070B1Method and system for establishing a voice communication service for business transactions and commerce applicationsCHANG IFAY F·Filed 2001·Granted Jun 20, 2006·51 cites·19 claims
- 0380US7643435B1Method and system for establishing a voice communication solution for business transactions and commerce applicationsCHANG IFAY F·Filed 2006·Granted Jan 5, 2010·8 cites·2 claims
- 0478US7325029B1Methods for enabling e-commerce voice communicationCHANG IFAY F·Filed 2000·Granted Jan 29, 2008·20 cites·14 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →