Inventor · disambiguated record
Chris E. Cawthorne
Also filed as: BELNAP DANIEL J · CAWTHORNE CHRIS · CAWTHORNE CHRIS E · CAWTHORNE CHRIS EDWARD
40 granted patents·2,610 citations·filing 1987–2004
99Inventor score
Top patents by PatentIndex Score
40 records- 0197US6516293B1Method for simulating drilling of roller cone bits and its application to roller cone bit design and performanceSMITH INTERNATIONAL·Filed 2000·Granted Feb 4, 2003·207 cites·64 claims
- 0297US6439326B1Centered-leg roller cone drill bitSMITH INTERNATIONAL·Filed 2000·Granted Aug 27, 2002·218 cites·49 claims
- 0395US5351770AUltra hard insert cutters for heel row rotary cone rock bit applicationsSMITH INTERNATIONAL·Filed 1993·Granted Oct 4, 1994·183 cites·24 claims
- 0492US6199645B1Engineered enhanced inserts for rock drilling bitsSMITH INTERNATIONAL·Filed 1998·Granted Mar 13, 2001·125 cites·13 claims
- 0591US6460637B1Engineered enhanced inserts for rock drilling bitsSMITH INTERNATIONAL·Filed 2000·Granted Oct 8, 2002·86 cites·20 claims
- 0691US5341890AUltra hard insert cutters for heel row rotary cone rock bit applicationsSMITH INTERNATIONAL·Filed 1993·Granted Aug 30, 1994·138 cites·21 claims
- 0790US6484826B1Engineered enhanced inserts for rock drilling bitsSMITH INTERNATIONAL·Filed 2000·Granted Nov 26, 2002·82 cites·36 claims
- 0889US6615935B2Roller cone bits with wear and fracture resistant surfaceSMITH INTERNATIONAL·Filed 2001·Granted Sep 9, 2003·41 cites·39 claims
- 0989US5839526ARolling cone steel tooth bit with enhancements in cutter shape and placementSMITH INTERNATIONAL·Filed 1997·Granted Nov 24, 1998·138 cites·66 claims
- 1088US4832139AInclined chisel inserts for rock bitsSMITH INTERNATIONAL·Filed 1987·Granted May 23, 1989·82 cites·6 claims
- 1187US6510909B2Rolling cone bit with gage and off-gage cutter elements positioned to separate sidewall and bottom hole cutting dutySMITH INTERNATIONAL·Filed 2002·Granted Jan 28, 2003·49 cites·51 claims
- 1287US6059054ANon-symmetrical stress-resistant rotary drill bit cutter elementSMITH INTERNATIONAL·Filed 1997·Granted May 9, 2000·120 cites·57 claims
- 1386US6361873B1Composite constructions having ordered microstructuresSMITH INTERNATIONAL·Filed 2000·Granted Mar 26, 2002·78 cites·41 claims
- 1486US6196339B1Dual-seal drill bit pressure communication systemSMITH INTERNATIONAL·Filed 1998·Granted Mar 6, 2001·67 cites·42 claims
- 1584US6695079B2Dual-seal drill bit pressure communication systemSMITH INTERNATIONAL·Filed 2002·Granted Feb 24, 2004·15 cites·15 claims
- 1683US6561293B2Cutter element with non-linear, expanded crestSMITH INTERNATIONAL·Filed 2001·Granted May 13, 2003·51 cites·20 claims
- 1783US5842701ADual functioning seal for rock bitsSMITH INTERNATIONAL·Filed 1996·Granted Dec 1, 1998·57 cites·54 claims
- 1883US5833020ARolling cone bit with enhancements in cutter element placement and materials to optimize borehole corner cutting dutySMITH INTERNATIONAL·Filed 1996·Granted Nov 10, 1998·61 cites·71 claims
- 1982US6123337AComposite earth boring bit sealSMITH INTERNATIONAL·Filed 1997·Granted Sep 26, 2000·69 cites·34 claims
- 2082US5967245ARolling cone bit having gage and nestled gage cutter elements having enhancements in materials and geometry to optimize borehole corner cutting dutySMITH INTERNATIONAL·Filed 1997·Granted Oct 19, 1999·100 cites·63 claims
- 2180US5172779ARadial crest insertSMITH INTERNATIONAL·Filed 1991·Granted Dec 22, 1992·73 cites·9 claims
- 2276US6536542B1Rock bit seal with multiple dynamic seal surface elementsSMITH INTERNATIONAL·Filed 1999·Granted Mar 25, 2003·70 cites·67 claims
- 2375US6033117ASealed bearing drill bit with dual-seal configurationSMITH INTERNATIONAL·Filed 1997·Granted Mar 7, 2000·66 cites·130 claims
- 2473US6679342B2Dual-seal drill bit pressure communication systemSMITH INTERNATIONAL·Filed 2002·Granted Jan 20, 2004·21 cites·13 claims
- 2573US6161634ACutter element with non-rectilinear crestFiled 1998·Granted Dec 19, 2000·63 cites·26 claims
- 2673US5868213ASteel tooth cutter element with gage facing kneeSMITH INTERNATIONAL·Filed 1997·Granted Feb 9, 1999·64 cites·74 claims
- 2769US6782959B2Cutter element with non-linear, expanded crestSMITH INTERNATIONAL·Filed 2003·Granted Aug 31, 2004·26 cites·15 claims
- 2869US6336512B1Drill bit having canted sealSMITH INTERNATIONAL·Filed 2000·Granted Jan 8, 2002·35 cites·29 claims
- 2968US6179296B1Dual functioning seal for rock bitsSMITH INTERNATIONAL·Filed 1998·Granted Jan 30, 2001·27 cites·32 claims
- 3065US6170830B1Dual functioning seal for rock bitsSMITH INTERNATIONAL·Filed 1998·Granted Jan 9, 2001·23 cites·31 claims
- 3164US6431293B1Dual-seal drill bit pressure communication systemSMITH INTERNATIONAL·Filed 2000·Granted Aug 13, 2002·20 cites·26 claims
- 3259US5842700AComposite rock bit sealSMITH INTERNATIONAL·Filed 1996·Granted Dec 1, 1998·35 cites·24 claims
- 3355US6571887B1Directional flow nozzle retention bodySII SMITH INTERNATIONAL INC·Filed 2000·Granted Jun 3, 2003·21 cites·26 claims
- 3450US6460636B1Drill bit inserts with variations in thickness of diamond coatingSMITH INTERNATIONAL·Filed 1999·Granted Oct 8, 2002·27 cites·24 claims
- 3550US5485890ARock bitSMITH INTERNATIONAL·Filed 1995·Granted Jan 23, 1996·27 cites·27 claims
- 3647US7237627B2Bearing and lubrication system for earth boring bitSMITH INTERNATIONAL·Filed 2004·Granted Jul 3, 2007·10 cites·20 claims
- 3747US5056610AShale diverting means for a sealed bearing drill bitSMITH INTERNATIONAL·Filed 1990·Granted Oct 15, 1991·21 cites·9 claims
- 3844US6820704B2Rock bit seal with extrusion prevention memberSMITH INTERNATIONAL·Filed 2002·Granted Nov 23, 2004·7 cites·27 claims
- 3938US7416035B2Shaped inserts with increased retention forceSMITH INTERNATIONAL·Filed 2004·Granted Aug 26, 2008·1 cites·30 claims
- 4036US6390210B1Rolling cone bit with gage and off-gage cutter elements positioned to separate sidewall and bottom hole cutting dutySMITH INTERNATIONAL·Filed 1996·Granted May 21, 2002·6 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →