Inventor · disambiguated record
Robert Engelhart
Also filed as: ENGELHART ROBERT · ENGELHART ROBERT L · ENGELHART ROBERT LEE · ENGELHART SR ROBERT LEE
50 granted patents·281 citations·filing 2002–2023
98Inventor score
Files withT MOBILE USA INC21AT & T MOBILITY II LLC20CINGULAR WIRELESS II LLC3AT & T WIRELESS SERVICES INC2ENGELHART SR ROBERT LEE2
Top patents by PatentIndex Score
50 records- 0197US11252246B1Event management mechanism in 5G systems and methodsT MOBILE USA INC·Filed 2020·Granted Feb 15, 2022·9 cites·20 claims
- 0296US10531515B1Data charging during charging function outagesT MOBILE USA INC·Filed 2019·Granted Jan 7, 2020·18 cites·20 claims
- 0393US11985573B1Methods and systems for reporting zero usage for immediate trigger typesT MOBILE USA INC·Filed 2021·Granted May 14, 2024·2 cites·15 claims
- 0493US7720489B2Network initiated USSD in mixed networksAT & T MOBILITY II LLC·Filed 2006·Granted May 18, 2010·25 cites·18 claims
- 0592US6934530B2Virtual subscriber networkAT & T WIRELESS SERVICES INC·Filed 2002·Granted Aug 23, 2005·79 cites·20 claims
- 0691US12003599B2Event management mechanism in 5G systems and methodsT MOBILE USA INC·Filed 2021·Granted Jun 4, 2024·2 cites·20 claims
- 0791US11729587B1Dynamic relocation of account information based on mobility of wireless deviceT MOBILE USA INC·Filed 2021·Granted Aug 15, 2023·2 cites·20 claims
- 0889US9602672B2Audio-based text messagingAT & T MOBILITY II LLC·Filed 2015·Granted Mar 21, 2017·7 cites·20 claims
- 0987US7907937B2Prepaid communication services utilizing a prepaid identifier combined with another identifierAT & T MOBILITY II LLC·Filed 2007·Granted Mar 15, 2011·12 cites·26 claims
- 1086US11751023B2Charging function fallbackT MOBILE USA INC·Filed 2021·Granted Sep 5, 2023·2 cites·20 claims
- 1185US7110987B2Secure online purchasingAT & T WIRELESS SERVICES INC·Filed 2002·Granted Sep 19, 2006·28 cites·45 claims
- 1284US7849013B2Secure online purchasingAT & T MOBILITY II LLC·Filed 2005·Granted Dec 7, 2010·10 cites·11 claims
- 1383US9992183B2Using an IP multimedia subsystem for HTTP session authenticationT MOBILE USA INC·Filed 2013·Granted Jun 5, 2018·6 cites·20 claims
- 1483US8995974B2Audio-based text messagingAT & T MOBILITY II LLC·Filed 2014·Granted Mar 31, 2015·7 cites·20 claims
- 1580US7266362B2Virtual subscriber networkCINGULAR WIRELESS II LLC·Filed 2005·Granted Sep 4, 2007·7 cites·20 claims
- 1679US11729588B1Stateless charging and message handlingT MOBILE USA INC·Filed 2021·Granted Aug 15, 2023·1 cites·20 claims
- 1779US10194487B2Communications path selection in user equipmentAT & T MOBILITY II LLC·Filed 2018·Granted Jan 29, 2019·2 cites·20 claims
- 1878US11544071B2System and method for asynchronous distribution of operations that require synchronous executionT MOBILE USA INC·Filed 2021·Granted Jan 3, 2023·1 cites·18 claims
- 1978US8385953B2Systems, methods, and computer program products for automatic mapping between parlay-X short messaging service message element XML encoding and native SMPP protocol data coding schemeAT & T MOBILITY II LLC·Filed 2010·Granted Feb 26, 2013·3 cites·17 claims
- 2077US10742631B2Using an IP multimedia subsystem for HTTP session authenticationT MOBILE USA INC·Filed 2018·Granted Aug 11, 2020·2 cites·16 claims
- 2176US12333329B2Dynamic discovery mechanism in 5G systems and methodsT MOBILE USA INC·Filed 2023·Granted Jun 17, 2025·0 cites·20 claims
- 2276US11048519B2System and method for asynchronous distribution of operations that require synchronous executionT MOBILE USA INC·Filed 2019·Granted Jun 29, 2021·2 cites·16 claims
- 2375US7974646B2Network initiated USSD in mixed networksAT & T MOBILITY II LLC·Filed 2010·Granted Jul 5, 2011·3 cites·17 claims
- 2473US12041521B2Stateless charging and message handlingT MOBILE USA INC·Filed 2023·Granted Jul 16, 2024·0 cites·20 claims
- 2573US7333809B2Multi-standard prepaid communication servicesAT & T MOBILITY II LLC·Filed 2003·Granted Feb 19, 2008·12 cites·18 claims
- 2670US11966744B2System and method for asynchronous distribution of operations that require synchronous executionT MOBILE USA INC·Filed 2022·Granted Apr 23, 2024·0 cites·20 claims
- 2770US11809892B2Dynamic discovery mechanism in 5G systems and methodsT MOBILE USA INC·Filed 2021·Granted Nov 7, 2023·0 cites·20 claims
- 2870US7280819B2Interrogate-response communication system with privacy indicationCINGULAR WIRELESS II LLC·Filed 2003·Granted Oct 9, 2007·10 cites·16 claims
- 2967US12513497B2Charging function fallbackT MOBILE USA INC·Filed 2023·Granted Dec 30, 2025·0 cites·20 claims
- 3067US11083044B2Data charging during charging function outagesT MOBILE USA INC·Filed 2020·Granted Aug 3, 2021·0 cites·20 claims
- 3167US8737975B2Audio-based text messagingENGELHART SR ROBERT LEE·Filed 2009·Granted May 27, 2014·4 cites·18 claims
- 3267US7747245B2Interrogate-response communication system with privacy indicationAT & T MOBILITY II LLC·Filed 2008·Granted Jun 29, 2010·2 cites·16 claims
- 3366US8762559B2System and method for non-IMS application service access over IP multimedia subsystemENGELHART ROBERT L·Filed 2011·Granted Jun 24, 2014·3 cites·17 claims
- 3466US7444138B2Interrogate-response communication system with privacy indicationAT & T MOBILITY II LLC·Filed 2007·Granted Oct 28, 2008·2 cites·15 claims
- 3565US7515696B2Centralized communications network charging methods and apparatusAT & T MOBILITY II LLC·Filed 2003·Granted Apr 7, 2009·7 cites·24 claims
- 3665US7263347B2Biometric authentication of a wireless device userCINGULAR WIRELESS II LLC·Filed 2002·Granted Aug 28, 2007·9 cites·17 claims
- 3764US10536989B2Communications path selection in user equipmentAT & T MOBILITY II LLC·Filed 2019·Granted Jan 14, 2020·0 cites·20 claims
- 3863US10813167B2Data charging during charging function outagesT MOBILE USA INC·Filed 2019·Granted Oct 20, 2020·0 cites·20 claims
- 3961US11119807B2Dynamic discovery mechanism in 5G systems and methodsT MOBILE USA INC·Filed 2019·Granted Sep 14, 2021·0 cites·20 claims
- 4058US9210108B2Systems, methods, and computer program products for automatic mapping between Parlay-X short messaging service message element XML encoding and native SMPP protocol data coding schemeAT & T MOBILITY II LLC·Filed 2014·Granted Dec 8, 2015·0 cites·20 claims
- 4157US9924562B2Communications path selection in user equipmentAT & T MOBILITY II LLC·Filed 2017·Granted Mar 20, 2018·0 cites·17 claims
- 4257US7848734B2Prepaid telecommunication systemAT & T MOBILITY II LLC·Filed 2002·Granted Dec 7, 2010·2 cites·18 claims
- 4355US9571430B2Systems, methods, and computer program products for automatic mapping between parlay-X short messaging service message element XML encoding and native SMPP protocol data coding schemeAT & T MOBILITY II LLC·Filed 2015·Granted Feb 14, 2017·0 cites·20 claims
- 4455US9125228B2Communications path selection in user equipmentENGELHART SR ROBERT LEE·Filed 2007·Granted Sep 1, 2015·0 cites·13 claims
- 4554US11985517B1Wireless communication network service using Network Repository Functions (NRFs)T MOBILE INNOVATIONS LLC·Filed 2021·Granted May 14, 2024·0 cites·21 claims
- 4654US8886235B2Systems, methods, and computer program products for automatic mapping between parlay-X short messaging service message element XML encoding and native SMPP protocol data coding schemeAT & T MOBILITY II LLC·Filed 2013·Granted Nov 11, 2014·0 cites·18 claims
- 4753US9674891B2Communications path selection in user equipmentAT & T MOBILITY II LLC·Filed 2015·Granted Jun 6, 2017·0 cites·20 claims
- 4853US9288670B2Dynamic distribution of authentication sessionsT MOBILE USA INC·Filed 2013·Granted Mar 15, 2016·0 cites·17 claims
- 4951US9590987B2Dynamic distribution of authentication sessionsT MOBILE USA INC·Filed 2016·Granted Mar 7, 2017·0 cites·20 claims
- 5050US8014764B2Interrogate-response communication system with privacy indicationAT & T MOBILITY II LLC·Filed 2010·Granted Sep 6, 2011·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →