Inventor · disambiguated record
Bertrand Du Castel
Also filed as: DU CASTEL BERTRAND
10 granted patents·1 pending application·470 citations·filing 1998–2017
90Inventor score
Top patents by PatentIndex Score
11 records- 0193US8266451B2Voice activated smart cardLEYDIER ROBERT A·Filed 2001·Granted Sep 11, 2012·239 cites·43 claims
- 0285US7926096B2Enforcing time-based transaction policies on devices lacking independent clocksGEMALTO SA·Filed 2005·Granted Apr 12, 2011·17 cites·18 claims
- 0381US6591229B1Metrology device with programmable smart cardSCHLUMBERGER IND SA·Filed 1998·Granted Jul 8, 2003·56 cites·8 claims
- 0473US6157966ASystem and method for an ISO7816 complaint smart card to become master over a terminalSCHLUMBERGER MALCO INC·Filed 1998·Granted Dec 5, 2000·132 cites·12 claims
- 0564US8606734B2System and method for automating exploration or production of subterranean resourceDU CASTEL BERTRAND·Filed 2009·Granted Dec 10, 2013·9 cites·9 claims
- 0662US9416646B2Determining drill string status in a wellboreSCHLUMBERGER TECHNOLOGY CORP·Filed 2012·Granted Aug 16, 2016·2 cites·20 claims
- 0761US7127529B2Smart card system having asynchronous communication with the smart card operating either as master or slaveAXALTO INC·Filed 2000·Granted Oct 24, 2006·7 cites·18 claims
- 0855US10859723B2Systems and methods for using Stoneley waves for bottom-hole proximity detectionSCHLUMBERGER TECHNOLOGY CORP·Filed 2017·Granted Dec 8, 2020·0 cites·18 claims
- 0954US9235838B2System and method for secure downhole intelligent completionsGERARDI PAUL D·Filed 2007·Granted Jan 12, 2016·8 cites·20 claims
- 1042US2003110272A1System and method for filtering contentFiled 2001·Application pending·0 cites
- 1136US10648296B2Borehole casing deployment detectionSCHLUMBERGER TECHNOLOGY CORP·Filed 2015·Granted May 12, 2020·0 cites·24 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →