Inventor · disambiguated record
Kerby J. Dufrene
Also filed as: DUFRENE KERBY J
3 granted patents·89 citations·filing 2001–2006
75Inventor score
Technology areasE21B
Files withSCHLUMBERGER TECHNOLOGY CORP3
Top patents by PatentIndex Score
3 records- 0192US7493959B2Joining tubular membersSCHLUMBERGER TECHNOLOGY CORP·Filed 2006·Granted Feb 24, 2009·49 cites·12 claims
- 0256US6494256B1Apparatus and method for zonal isolationSCHLUMBERGER TECHNOLOGY CORP·Filed 2001·Granted Dec 17, 2002·27 cites·42 claims
- 0352US7866708B2Joining tubular membersSCHLUMBERGER TECHNOLOGY CORP·Filed 2004·Granted Jan 11, 2011·13 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →