Assignee
WENZEL DOWNHOLE TOOLS LTD
CA·3 granted patents·2 pending applications·79 citations·filing 1997–2014
Top patents by PatentIndex Score
5 records- 0159US6220372B1Apparatus for drilling lateral drainholes from a wellboreWENZEL DOWNHOLE TOOLS LTD·Filed 1997·Granted Apr 24, 2001·56 cites·14 claims
- 0251US7635224B2Method of adjusting backlash in a down hole bearing assemblyWENZEL DOWNHOLE TOOLS LTD·Filed 2006·Granted Dec 22, 2009·3 cites·7 claims
- 0342US5964307AShock tool for use in directional drillingWENZEL DOWNHOLE TOOLS LTD·Filed 1997·Granted Oct 12, 1999·20 cites·12 claims
- 0438US2016032653A1Downhole vibration toolWENZEL DOWNHOLE TOOLS LTD·Filed 2014·Application pending·0 cites
- 0529US2004089461A1Downhole percussion drilling apparatusWENZEL DOWNHOLE TOOLS LTD·Filed 2003·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when WENZEL DOWNHOLE TOOLS LTD files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →