Assignee
DRENTH CHRISTOPHER L
US·16 granted patents·1 pending application·144 citations·filing 2010–2012
Top patents by PatentIndex Score
17 records- 0189US8794355B2Driven latch mechanismDRENTH CHRISTOPHER L·Filed 2010·Granted Aug 5, 2014·12 cites·18 claims
- 0288US9810029B2Drill string components resistant to jammingDRENTH CHRISTOPHER L·Filed 2012·Granted Nov 7, 2017·11 cites·23 claims
- 0388US8485280B2Core drilling tools with retractably lockable driven latch mechanismsDRENTH CHRISTOPHER L·Filed 2010·Granted Jul 16, 2013·12 cites·24 claims
- 0485USD650052SSeal for head assemblyDRENTH CHRISTOPHER L·Filed 2010·Granted Dec 6, 2011·33 cites·1 claims
- 0583US8770322B2Latch body components having multiple functions, and drilling head assembly incorporating sameDRENTH CHRISTOPHER L·Filed 2012·Granted Jul 8, 2014·9 cites·26 claims
- 0679US8770320B2Core lifterDRENTH CHRISTOPHER L·Filed 2010·Granted Jul 8, 2014·5 cites·24 claims
- 0778US8869918B2Core drilling tools with external fluid pathwaysDRENTH CHRISTOPHER L·Filed 2010·Granted Oct 28, 2014·5 cites·26 claims
- 0872USD648836SSeal for head assemblyDRENTH CHRISTOPHER L·Filed 2010·Granted Nov 15, 2011·18 cites·1 claims
- 0966USD649167SCore barrel head assembly with tapered designDRENTH CHRISTOPHER L·Filed 2011·Granted Nov 22, 2011·8 cites·1 claims
- 1063USD664567SCore barrel latch bodyDRENTH CHRISTOPHER L·Filed 2011·Granted Jul 31, 2012·7 cites·1 claims
- 1161USD649228SSeal for head assemblyDRENTH CHRISTOPHER L·Filed 2010·Granted Nov 22, 2011·11 cites·1 claims
- 1260USD664566SCore barrel retracting caseDRENTH CHRISTOPHER L·Filed 2011·Granted Jul 31, 2012·6 cites·1 claims
- 1356US8770319B2Pump-in sealDRENTH CHRISTOPHER L·Filed 2010·Granted Jul 8, 2014·1 cites·18 claims
- 1446USD687862SLatch bodyDRENTH CHRISTOPHER L·Filed 2012·Granted Aug 13, 2013·5 cites·1 claims
- 1540US2013220615A1Internal tubing cutterDRENTH CHRISTOPHER L·Filed 2012·Application pending·0 cites
- 1633USD687863SLatch bodyDRENTH CHRISTOPHER L·Filed 2012·Granted Aug 13, 2013·1 cites·1 claims
- 1730USD687864SLatch bodyDRENTH CHRISTOPHER L·Filed 2012·Granted Aug 13, 2013·0 cites·1 claims
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