Inventor · disambiguated record
Charles Langevin
Also filed as: LANGEVIN CHARLES
3 granted patents·4 citations·filing 2012–2017
60Inventor score
Files withAT & T IP I LP3
Top patents by PatentIndex Score
3 records- 0175US10009740B2Visual IVR using call redirectAT & T IP I LP·Filed 2017·Granted Jun 26, 2018·2 cites·20 claims
- 0259US9730036B2Visual IVR using call redirectAT & T IP I LP·Filed 2015·Granted Aug 8, 2017·1 cites·19 claims
- 0358US9191795B2Visual IVR using call redirectAT & T IP I LP·Filed 2012·Granted Nov 17, 2015·1 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →