Inventor · disambiguated record
Prabhakaran K. Centala
Also filed as: CENTALA PRABHAKARAN · CENTALA PRABHAKARAN K
10 granted patents·6 pending applications·46 citations·filing 2004–2025
87Inventor score
Technology areasE21B
Files withNAT OILWELL VARCO LP5SMITH INTERNATIONAL5CENTALA PRABHAKARAN K2BIJAI RAHUL1BOUDRARE MOHAMMED1
Top patents by PatentIndex Score
16 records- 0183US8672060B2High shear roller cone drill bitsCENTALA PRABHAKARAN K·Filed 2010·Granted Mar 18, 2014·11 cites·27 claims
- 0263US8955413B2Manufacturing methods for high shear roller cone bitsBIJAI RAHUL·Filed 2010·Granted Feb 17, 2015·5 cites·19 claims
- 0360USD1068885SDrill bit cutter elementNAT OILWELL VARCO LP·Filed 2022·Granted Apr 1, 2025·2 cites·1 claims
- 0458US9574405B2Hybrid disc bit with optimized PDC cutter placementCARIVEAU PETER THOMAS·Filed 2005·Granted Feb 21, 2017·7 cites·21 claims
- 0558US2025354441A1Cutter elements with concave recesses and fixed cutter drill bit including sameNAT OILWELL VARCO LP·Filed 2025·Application pending·0 cites
- 0656US7549488B2Two-cone drill bit with enhanced stabilitySMITH INTERNATIONAL·Filed 2008·Granted Jun 23, 2009·4 cites·24 claims
- 0748US2025223872A1Drill bit cutter elements with multiple surface finishesNAT OILWELL VARCO LP·Filed 2023·Application pending·0 cites
- 0848US2014196956A1High shear roller cone drill bitsSMITH INTERNATIONAL·Filed 2014·Application pending·0 cites
- 0944US2010132510A1Two-cone drill bitSMITH INTERNATIONAL·Filed 2010·Application pending·0 cites
- 1043US7316281B2Two-cone drill bit with enhanced stabilitySMITH INTERNATIONAL·Filed 2004·Granted Jan 8, 2008·6 cites·39 claims
- 1142US7681670B2Two-cone drill bitSMITH INTERNATIONAL·Filed 2004·Granted Mar 23, 2010·5 cites·31 claims
- 1241USD1094487SDrill bit cutter elementNAT OILWELL VARCO LP·Filed 2023·Granted Sep 23, 2025·0 cites·1 claims
- 1341US8185365B2Radial force distributions in rock bitsCENTALA PRABHAKARAN K·Filed 2004·Granted May 22, 2012·6 cites·39 claims
- 1436US2006011388A1Drill bit and cutter element having multiple extensionsBOUDRARE MOHAMMED·Filed 2005·Application pending·0 cites
- 1535US2005015230A1Axial stability in rock bitsFiled 2004·Application pending·0 cites
- 1633USD1068886SDrill bit cutter elementNAT OILWELL VARCO LP·Filed 2022·Granted Apr 1, 2025·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →