Inventor · disambiguated record
Douglas E. Lecrone
Also filed as: LECRONE DOUGLAS · LECRONE DOUGLAS E · LECRONE DOUGLAS ERIC
132 granted patents·4 pending applications·3,019 citations·filing 1997–2023
99Inventor score
Top patents by PatentIndex Score
136 records- 0199US6598134B2System and method for on-line, real time, data migrationEMC CORP·Filed 2001·Granted Jul 22, 2003·214 cites·19 claims
- 0298US9753663B1Triangular asynchronous replicationEMC IP HOLDING CO LLC·Filed 2016·Granted Sep 5, 2017·26 cites·12 claims
- 0398US8959305B1Space reclamation with virtually provisioned devicesLECRONE DOUGLAS E·Filed 2012·Granted Feb 17, 2015·259 cites·20 claims
- 0496US9971529B1Selective data replicationEMC IP HOLDING CO LLC·Filed 2016·Granted May 15, 2018·18 cites·19 claims
- 0596US9558083B2Triangular asynchronous replicationLECRONE DOUGLAS E·Filed 2011·Granted Jan 31, 2017·26 cites·10 claims
- 0696US7054883B2Virtual ordered writes for multiple storage devicesEMC CORP·Filed 2003·Granted May 30, 2006·150 cites·20 claims
- 0795US9665307B1Incremental continuous data protectionEMC CORP·Filed 2013·Granted May 30, 2017·26 cites·18 claims
- 0895US7228456B2Data recovery for virtual ordered writes for multiple storage devicesEMC CORP·Filed 2003·Granted Jun 5, 2007·130 cites·18 claims
- 0993US9927980B1Accessing point in time versions of a logical device in connection with I/O operationsEMC CORP·Filed 2016·Granted Mar 27, 2018·26 cites·20 claims
- 1093US9606739B1Virtual ordered writes for multiple storage devicesEMC IP HOLDING CO LLC·Filed 2014·Granted Mar 28, 2017·26 cites·16 claims
- 1193US8862541B1N-site asynchronous replicationCOX GARY H·Filed 2012·Granted Oct 14, 2014·22 cites·17 claims
- 1293US6631477B1Host system for mass storage business continuance volumesEMC CORP·Filed 1998·Granted Oct 7, 2003·237 cites·16 claims
- 1393US6341329B1Virtual tape systemEMC CORP·Filed 2000·Granted Jan 22, 2002·148 cites·20 claims
- 1492US10133505B1Cooperative host and data storage system services for compression and encryptionEMC IP HOLDING CO LLC·Filed 2016·Granted Nov 20, 2018·9 cites·19 claims
- 1592US8914596B2Virtual ordered writes for multiple storage devicesLECRONE DOUGLAS E·Filed 2006·Granted Dec 16, 2014·25 cites·18 claims
- 1692US6839773B2Method for enabling overlapped input/output requests to a logical device using assigned and parallel access unit control blocksEMC CORP·Filed 2003·Granted Jan 4, 2005·64 cites·30 claims
- 1792US6260110B1Virtual tape system with variable sizeEMC CORP·Filed 2000·Granted Jul 10, 2001·101 cites·12 claims
- 1891US10372345B1High performance logical deviceEMC IP HOLDING CO LLC·Filed 2017·Granted Aug 6, 2019·7 cites·19 claims
- 1991US10095444B1Tape emulation alternate data pathEMC IP HOLDING CO LLC·Filed 2017·Granted Oct 9, 2018·6 cites·17 claims
- 2091US9170904B1I/O fault injection using simulated computing environmentsLECRONE DOUGLAS E·Filed 2008·Granted Oct 27, 2015·25 cites·16 claims
- 2191US8601209B1Maintaining dasd and tape continuous availabilityLECRONE DOUGLAS E·Filed 2011·Granted Dec 3, 2013·16 cites·18 claims
- 2291US7779291B2Four site triangular asynchronous replicationEMC CORP·Filed 2006·Granted Aug 17, 2010·28 cites·20 claims
- 2391US7607037B1SAR restart and going home proceduresEMC CORP·Filed 2006·Granted Oct 20, 2009·25 cites·20 claims
- 2490US11354268B2Optimizing snapshot creationEMC IP HOLDING CO LLC·Filed 2020·Granted Jun 7, 2022·3 cites·20 claims
- 2590US9645766B1Tape emulation alternate data pathEMC IP HOLDING CO LLC·Filed 2014·Granted May 9, 2017·11 cites·17 claims
- 2689US7024528B2Storage automated replication processingEMC CORP·Filed 2002·Granted Apr 4, 2006·52 cites·15 claims
- 2788US7734884B1Simultaneous concurrent and cascaded triangular asynchronous replicationEMC CORP·Filed 2006·Granted Jun 8, 2010·19 cites·20 claims
- 2887US8078813B2Triangular asynchronous replicationLECRONE DOUGLAS E·Filed 2004·Granted Dec 13, 2011·36 cites·15 claims
- 2987US7647525B2Resumption of operations following failover in connection with triangular asynchronous replicationEMC CORP·Filed 2006·Granted Jan 12, 2010·18 cites·24 claims
- 3087US6543001B2Method and apparatus for maintaining data coherencyEMC CORP·Filed 2001·Granted Apr 1, 2003·43 cites·20 claims
- 3187US6070224AVirtual tape systemEMC CORP·Filed 1998·Granted May 30, 2000·144 cites·22 claims
- 3286US10976937B1Disparate local and remote replication technologies configured for the same deviceEMC IP HOLDING CO LLC·Filed 2016·Granted Apr 13, 2021·5 cites·16 claims
- 3386US8593918B1Maintaining tape emulation consistencyLECRONE DOUGLAS E·Filed 2011·Granted Nov 26, 2013·8 cites·18 claims
- 3486US7430646B2Planned switchover in connection with triangular asynchronous replicationEMC CORP·Filed 2006·Granted Sep 30, 2008·16 cites·19 claims
- 3586US7117386B2SAR restart and going home proceduresEMC CORP·Filed 2002·Granted Oct 3, 2006·44 cites·30 claims
- 3686US6308284B1Method and apparatus for maintaining data coherencyEMC CORP·Filed 1998·Granted Oct 23, 2001·113 cites·20 claims
- 3784US6874046B1Method and apparatus for enhancing access to redundant data storage facilitiesEMC CORP·Filed 2001·Granted Mar 29, 2005·38 cites·18 claims
- 3883US11237921B2Protecting storage backup configurationEMC IP HOLDING CO LLC·Filed 2019·Granted Feb 1, 2022·3 cites·22 claims
- 3983US8281152B2Storage data encryptionLECRONE DOUGLAS E·Filed 2005·Granted Oct 2, 2012·13 cites·11 claims
- 4083US6754682B1Method and apparatus for enabling consistent ancillary disk array storage device operations with respect to a main applicationEMC CORP·Filed 2000·Granted Jun 22, 2004·36 cites·9 claims
- 4182US9665502B1Virtual I/O hardwareEMC CORP·Filed 2013·Granted May 30, 2017·7 cites·14 claims
- 4282US7685129B1Dynamic data set migrationEMC CORP·Filed 2004·Granted Mar 23, 2010·34 cites·23 claims
- 4382US7657718B1Storage automated replication processingEMC CORP·Filed 2005·Granted Feb 2, 2010·11 cites·18 claims
- 4482US6529944B1Host system for remote control of mass storage volumes using cascading commandsEMC CORP·Filed 1999·Granted Mar 4, 2003·136 cites·20 claims
- 4581US7680997B1Data recovery simulationEMC CORP·Filed 2006·Granted Mar 16, 2010·11 cites·17 claims
- 4681US7340461B2Deactivating virtual devices and rolling backupEMC CORP·Filed 2002·Granted Mar 4, 2008·20 cites·19 claims
- 4781US7266719B1Host system for mass storage business continuance volumesEMC CORP·Filed 2003·Granted Sep 4, 2007·30 cites·19 claims
- 4880US11698884B2File level incremental continuous data protectionEMC IP HOLDING CO LLC·Filed 2020·Granted Jul 11, 2023·1 cites·23 claims
- 4980US11379289B2Encryption detectionEMC IP HOLDING CO LLC·Filed 2019·Granted Jul 5, 2022·2 cites·19 claims
- 5080US11163708B2Automated transformation from command mode to transport modeEMC IP HOLDING CO LLC·Filed 2020·Granted Nov 2, 2021·1 cites·20 claims
Showing the top 50 of 136 patent records by PatentIndex Score.
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