Inventor · disambiguated record
Edwin R. Knerr
Also filed as: KNERR EDWIN R
4 granted patents·161 citations·filing 1987–2002
80Inventor score
Technology areasE21B
Top patents by PatentIndex Score
4 records- 0184US6675900B2Crossover tree systemFiled 2002·Granted Jan 13, 2004·80 cites·32 claims
- 0267US4852611AWellhead connection of hydraulic control linesNAT OIL WELL U K LIMITED·Filed 1987·Granted Aug 1, 1989·45 cites·6 claims
- 0356US6679330B1Tubing hanger with ball valveKVAERNER OILFIELD PRODUCTS INC·Filed 2001·Granted Jan 20, 2004·26 cites·4 claims
- 0442US6644411B2Tubing hanger with flapper valveKVAERNER OILFIELD PRODUCTS INC·Filed 2001·Granted Nov 11, 2003·10 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →