Inventor · disambiguated record
David Walker
Also filed as: WALKER DAVID · WALKER DAVID J · WALKER DAVID JOSEPH
19 granted patents·9 pending applications·1,127 citations·filing 1993–2025
96Inventor score
Top patents by PatentIndex Score
28 records- 0198US7150326B2Bi-directional ball seat system and methodBJ SERVICES CO·Filed 2006·Granted Dec 19, 2006·131 cites·14 claims
- 0296US7472750B2Single trip horizontal gravel pack and stimulation system and methodBJ SERVICES CO USA·Filed 2007·Granted Jan 6, 2009·80 cites·27 claims
- 0396US7210527B2Single trip horizontal gravel pack and stimulation system and methodBJ SERVICES CO USA·Filed 2006·Granted May 1, 2007·73 cites·27 claims
- 0496US7021389B2Bi-directional ball seat system and methodBJ SERVICES CO·Filed 2003·Granted Apr 4, 2006·174 cites·43 claims
- 0595US7331388B2Horizontal single trip system with rotating jetting toolBJ SERVICES CO·Filed 2006·Granted Feb 19, 2008·93 cites·25 claims
- 0692US7017664B2Single trip horizontal gravel pack and stimulation system and methodBJ SERVICES CO·Filed 2002·Granted Mar 28, 2006·100 cites·30 claims
- 0792US6405800B1Method and apparatus for controlling fluid flow in a wellOSCA INC·Filed 2000·Granted Jun 18, 2002·115 cites·20 claims
- 0891US7490669B2Multi-zone, single trip well completion system and methods of useBJ SERVICES CO·Filed 2006·Granted Feb 17, 2009·40 cites·20 claims
- 0990US7543647B2Multi-zone, single trip well completion system and methods of useBJ SERVICES CO·Filed 2006·Granted Jun 9, 2009·32 cites·20 claims
- 1081US5735105AEncapsulation apparatus and processSCHERER CORP R P·Filed 1993·Granted Apr 7, 1998·65 cites·22 claims
- 1180US9524463B2Methods and systems for automating carbon footprintingMEINRENKEN CHRISTOPH JOHANNES·Filed 2011·Granted Dec 20, 2016·10 cites·16 claims
- 1275US6397949B1Method and apparatus for production using a pressure actuated circulating valveOSCA INC·Filed 1999·Granted Jun 4, 2002·72 cites·19 claims
- 1374US12263646B2Devices, systems, and methods for multi-projector three dimensional printingAZUL 3D INC·Filed 2022·Granted Apr 1, 2025·0 cites·20 claims
- 1472US6884060B2Apparatus for manufacturing encapsulated productsSCHERER TECHNOLOGIES INC R P·Filed 2001·Granted Apr 26, 2005·13 cites·18 claims
- 1570US6302208B1Gravel pack isolation systemFiled 1999·Granted Oct 16, 2001·57 cites·19 claims
- 1670US2025196443A1Devices, systems, and methods for multi-projector three dimensional printingAZUL 3D INC·Filed 2025·Application pending·0 cites
- 1766US2022237472A1Methods and systems for automating carbon footprintingUNIV COLUMBIA·Filed 2021·Application pending·0 cites
- 1863US11472119B2Devices, systems, and methods for multi-projector three dimensional printingAZUL 3D INC·Filed 2020·Granted Oct 18, 2022·0 cites·17 claims
- 1963US2021232935A1Methods and systems for automating carbon footprintingUNIV COLUMBIA·Filed 2020·Application pending·0 cites
- 2062US6568474B2Rigless one-trip perforation and gravel pack system and methodBJ SERVICES USA·Filed 2001·Granted May 27, 2003·30 cites·17 claims
- 2161US6206100B1Separable one-trip perforation and gravel pack system and methodOSCA INC·Filed 1999·Granted Mar 27, 2001·42 cites·20 claims
- 2260US2017103325A1Methods and systems for automating carbon footprintingUNIV COLUMBIA·Filed 2016·Application pending·0 cites
- 2355US2025296285A1Three dimensional printing process flow management and support systemsAZUL 3D INC·Filed 2023·Application pending·0 cites
- 2452US2010024889A1Unidirectional Flow Device and Methods of UseBJ SERVICES CO·Filed 2009·Application pending·0 cites
- 2546US2012151234A1Method and apparatus for message handling during power saving modesTEAGUE EDWARD H·Filed 2010·Application pending·0 cites
- 2643US9219674B2Packet detection in the presence of interferersQUALCOMM INC·Filed 2013·Granted Dec 22, 2015·0 cites·26 claims
- 2740US2009301732A1Downhole Valve Actuation Methods and ApparatusBJ SERVICES CO·Filed 2009·Application pending·0 cites
- 2839US2015047837A1Multi-Zone Single Trip Well Completion SystemSUPERIOR ENERGY SERVICES LLC·Filed 2014·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →