Inventor · disambiguated record
Jack T. Oldham
Also filed as: OLDHAM JACK T · OLDHAM JACK THOMAS
33 granted patents·2 pending applications·1,397 citations·filing 1997–2019
98Inventor score
Top patents by PatentIndex Score
35 records- 0198US7096978B2Drill bits with reduced exposure of cuttersBAKER HUGHES INC·Filed 2005·Granted Aug 29, 2006·109 cites·20 claims
- 0297US7395882B2Casing and liner drilling bitsBAKER HUGHES INC·Filed 2004·Granted Jul 8, 2008·154 cites·86 claims
- 0396US6460631B2Drill bits with reduced exposure of cuttersBAKER HUGHES INC·Filed 2000·Granted Oct 8, 2002·161 cites·83 claims
- 0496US5957223ABi-center drill bit with enhanced stabilizing featuresBAKER HUGHES INC·Filed 1997·Granted Sep 28, 1999·243 cites·34 claims
- 0595US6779613B2Drill bits with controlled exposure of cuttersBAKER HUGHES INC·Filed 2002·Granted Aug 24, 2004·118 cites·41 claims
- 0693US5979571ACombination milling tool and drill bitBAKER HUGHES INC·Filed 1997·Granted Nov 9, 1999·240 cites·18 claims
- 0791US8172008B2Drilling apparatus with reduced exposure of cutters and methods of drillingDYKSTRA MARK W·Filed 2011·Granted May 8, 2012·11 cites·21 claims
- 0891US7624818B2Earth boring drill bits with casing component drill out capability and methods of useBAKER HUGHES INC·Filed 2005·Granted Dec 1, 2009·37 cites·21 claims
- 0990US8006785B2Casing and liner drilling bits and reamersBAKER HUGHES INC·Filed 2008·Granted Aug 30, 2011·24 cites·69 claims
- 1090US6935441B2Drill bits with reduced exposure of cuttersBAKER HUGHES INC·Filed 2004·Granted Aug 30, 2005·65 cites·24 claims
- 1189US8167059B2Casing and liner drilling shoes having spiral blade configurations, and related methodsOLDHAM JACK T·Filed 2011·Granted May 1, 2012·8 cites·20 claims
- 1288US7455125B2Drilling tool equipped with improved cutting element layout to reduce cutter damage through formation changes, methods of design and operation thereofBAKER HUGHES INC·Filed 2005·Granted Nov 25, 2008·29 cites·59 claims
- 1385US7814990B2Drilling apparatus with reduced exposure of cutters and methods of drillingBAKER HUGHES INC·Filed 2006·Granted Oct 19, 2010·16 cites·46 claims
- 1484US7748475B2Earth boring drill bits with casing component drill out capability and methods of useBAKER HUGHES INC·Filed 2007·Granted Jul 6, 2010·21 cites·11 claims
- 1583US8978788B2Cutting element for a drill bit used in drilling subterranean formationsVEMPATI CHAITANYA K·Filed 2010·Granted Mar 17, 2015·8 cites·22 claims
- 1683US7178609B2Window mill and drill bitBAKER HUGHES INC·Filed 2004·Granted Feb 20, 2007·67 cites·4 claims
- 1782US8066084B2Drilling apparatus with reduced exposure of cutters and methods of drillingDYKSTRA MARK W·Filed 2010·Granted Nov 29, 2011·5 cites·24 claims
- 1881US8678111B2Hybrid drill bit and design methodZAHRADNIK ANTON F·Filed 2008·Granted Mar 25, 2014·18 cites·46 claims
- 1981US8225887B2Casing and liner drilling shoes with portions configured to fail responsive to pressure, and related methodsOLDHAM JACK T·Filed 2011·Granted Jul 24, 2012·4 cites·21 claims
- 2081US8205693B2Casing and liner drilling shoes having selected profile geometries, and related methodsOLDHAM JACK T·Filed 2011·Granted Jun 26, 2012·4 cites·21 claims
- 2181US8127869B2Earth-boring tools, methods of making earth-boring tools and methods of drilling with earth-boring toolsVEMPATI CHAITANYA K·Filed 2010·Granted Mar 6, 2012·7 cites·6 claims
- 2276US8225888B2Casing shoes having drillable and non-drillable cutting elements in different regions and related methodsOLDHAM JACK T·Filed 2011·Granted Jul 24, 2012·3 cites·21 claims
- 2376US7954570B2Cutting elements configured for casing component drillout and earth boring drill bits including sameBAKER HUGHES INC·Filed 2006·Granted Jun 7, 2011·15 cites·4 claims
- 2470US9670736B2Hybrid drill bitBAKER HUGHES INC·Filed 2013·Granted Jun 6, 2017·3 cites·22 claims
- 2570US8887839B2Drill bit for use in drilling subterranean formationsVEMPATI CHAITANYA K·Filed 2010·Granted Nov 18, 2014·5 cites·20 claims
- 2667US9085939B2Earth-boring tools attachable to a casing string and methods for their manufactureMCCLAIN ERIC E·Filed 2008·Granted Jul 21, 2015·4 cites·32 claims
- 2767US8191654B2Methods of drilling using differing types of cutting elementsMCCLAIN ERIC E·Filed 2011·Granted Jun 5, 2012·3 cites·8 claims
- 2866US8459378B2Hybrid drill bitZAHRADNIK ANTON F·Filed 2009·Granted Jun 11, 2013·8 cites·27 claims
- 2966US8297380B2Casing and liner drilling shoes having integrated operational components, and related methodsOLDHAM JACK T·Filed 2011·Granted Oct 30, 2012·1 cites·17 claims
- 3062US10871036B2Hybrid drill bit and design methodBAKER HUGHES HOLDINGS LLC·Filed 2019·Granted Dec 22, 2020·0 cites·16 claims
- 3161US10316589B2Hybrid drill bit and design methodBAKER HUGHES INC·Filed 2014·Granted Jun 11, 2019·1 cites·23 claims
- 3261US7703558B2Drilling tool for reducing cutter damage when drilling through formation changes, and methods of design and operation thereofBAKER HUGHES INC·Filed 2008·Granted Apr 27, 2010·5 cites·25 claims
- 3351US9957757B2Cutting elements for drill bits for drilling subterranean formations and methods of forming such cutting elementsBAKER HUGHES INC·Filed 2015·Granted May 1, 2018·0 cites·20 claims
- 3446US2012118642A1Methods of making earth-boring tools and methods of drilling with earth-boring toolsVEMPATI CHAITANYA K·Filed 2012·Application pending·0 cites
- 3536US2007106487A1Methods for optimizing efficiency and durability of rotary drag bits and rotary drag bits designed for optimal efficiency and durabilityGAVIA DAVID·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →