Inventor · disambiguated record
Lennard Sihlis
Also filed as: SIHLIS LENNARD · SIHLIS LENNARD ROY
5 granted patents·104 citations·filing 1993–2018
80Inventor score
Technology areasE21B
Top patents by PatentIndex Score
5 records- 0193US9739117B2Profile selective system for downhole toolsGRYPHON OILFIELD SOLUTIONS LLC·Filed 2014·Granted Aug 22, 2017·27 cites·34 claims
- 0261US5269385AAdjustable bent housing IICANADIAN FRACMASTER LTD·Filed 1993·Granted Dec 14, 1993·41 cites·14 claims
- 0354US10571027B2Metal ring seal and improved profile selective system for downhole toolsGRYPHON OILFIELD SOLUTIONS LLC·Filed 2018·Granted Feb 25, 2020·1 cites·23 claims
- 0453US5894896AOrienting tool for coiled tubing drillingCANADIAN FRACMASTER LTD·Filed 1996·Granted Apr 20, 1999·35 cites·29 claims
- 0551US10563480B2Profile selective system for downhole toolsGRYPHON OILFIELD SOLUTIONS LLC·Filed 2017·Granted Feb 18, 2020·0 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →