Inventor · disambiguated record
John Murray Tough
Also filed as: TOUGH JOHN · TOUGH JOHN MURRAY
2 granted patents·1 citations·filing 2014–2022
31Inventor score
Technology areasE21B
Top patents by PatentIndex Score
2 records- 0152US9885224B2Burst sleeve and positive indication for fracture sleeve openingWEATHERFORD TECH HOLDINGS LLC·Filed 2014·Granted Feb 6, 2018·1 cites·17 claims
- 0245US11851960B2Method for isolation of borehole pressure while performing a borehole operation in a pressure isolated borehole zoneDISRUPTIVE DOWNHOLE TECH LLC·Filed 2022·Granted Dec 26, 2023·0 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →