Inventor · disambiguated record
Darrell Fongson
Also filed as: FONGSON DARRELL
4 granted patents·46 citations·filing 2001–2011
76Inventor score
Top patents by PatentIndex Score
4 records- 0181US6771751B1Systems and methods for information exchange and synchronization using DTMF over telephone communication channelsCOMDIAL CORP·Filed 2001·Granted Aug 3, 2004·31 cites·38 claims
- 0271US8098801B2Systems and methods for information exchange and synchronization using DTMF over telephone communication channelsKASTURI SRIVATSAN·Filed 2006·Granted Jan 17, 2012·4 cites·10 claims
- 0368US7088804B1Systems and methods for information exchange and synchronization using DTMF over telephone communication channelsCOMDIAL CORP·Filed 2004·Granted Aug 8, 2006·11 cites·14 claims
- 0448US9106767B2Systems and methods for information exchange and synchronization using DTMF over telephone communication channelsKASTURI SRIVATSAN·Filed 2011·Granted Aug 11, 2015·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →