Inventor · disambiguated record
Charles Espinoza
Also filed as: ESPINOZA CHARLES
3 granted patents·3 citations·filing 2013–2016
58Inventor score
Technology areasE21B
Files withPIONEER NATURAL RESOURCES USA INC3
Top patents by PatentIndex Score
3 records- 0164US10145207B2Well treatment device, method, and systemPIONEER NATURAL RESOURCES USA INC·Filed 2016·Granted Dec 4, 2018·1 cites·7 claims
- 0263US9404353B2Well treatment device, method, and systemPIONEER NATURAL RESOURCES USA INC·Filed 2013·Granted Aug 2, 2016·2 cites·120 claims
- 0350US9982509B2Well treatment device, method, and systemPIONEER NATURAL RESOURCES USA INC·Filed 2016·Granted May 29, 2018·0 cites·27 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →