Inventor · disambiguated record
Daniel C. Markel
Also filed as: MARKEL DANIEL C
13 granted patents·2 pending applications·573 citations·filing 1990–2016
94Inventor score
Top patents by PatentIndex Score
15 records- 0196US6554081B1Components and methods for use with explosivesSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Apr 29, 2003·73 cites·35 claims
- 0294US6702039B2Perforating gun carriers and their methods of manufactureSCHLUMBERGER TECHNOLOGY CORP·Filed 2002·Granted Mar 9, 2004·26 cites·40 claims
- 0392US6520258B1Encapsulant providing structural support for explosivesSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Feb 18, 2003·89 cites·33 claims
- 0491US7347261B2Magnetic locator systems and methods of use at a well siteSCHLUMBERGER TECHNOLOGY CORP·Filed 2005·Granted Mar 25, 2008·65 cites·26 claims
- 0582US5816343APhased perforating gunsSCLUMBERGER TECHNOLOGY CORP·Filed 1997·Granted Oct 6, 1998·108 cites·18 claims
- 0681US6386109B1Shock barriers for explosivesSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted May 14, 2002·46 cites·21 claims
- 0777US6591911B1Multi-directional gun carrier method and apparatusSCHLUMBERGER TECHNOLOGY CORP·Filed 2000·Granted Jul 15, 2003·52 cites·17 claims
- 0870US5123356ATransfer apparatus adapted for transferring an explosive train through an externally pressurized secondary explosive bulkheadSCHLUMBERGER TECHNOLOGY CORP·Filed 1991·Granted Jun 23, 1992·49 cites·7 claims
- 0959US7197985B2High-pressure explosive retention deviceSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Granted Apr 3, 2007·9 cites·22 claims
- 1056US7413015B2Perforating gunSCHLUMBERGER TECHNOLOGY CORP·Filed 2005·Granted Aug 19, 2008·5 cites·12 claims
- 1156US6453817B1Shaped charge capsuleSCHLUMBERGER TECHNOLOGY CORP·Filed 1999·Granted Sep 24, 2002·24 cites·28 claims
- 1253US5095999AThrough tubing perforating gun including a plurality of phased capsule charges mounted on a retrievable base strip via a plurality of shatterable support ringsSCHLUMBERGER TECHNOLOGY CORP·Filed 1990·Granted Mar 17, 1992·27 cites·7 claims
- 1346US10648263B2Downhole plug assemblySCHLUMBERGER TECHNOLOGY CORP·Filed 2016·Granted May 12, 2020·0 cites·12 claims
- 1438US2018171743A1Cathodically-protected plug assemblySCHLUMBERGER TECHNOLOGY CORP·Filed 2016·Application pending·0 cites
- 1533US2005247450A1Flame and Heat Resistant Oilfield ToolsSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →