Inventor · disambiguated record
Don Umphries
Also filed as: UMPHRIES DON
10 granted patents·1 pending application·68 citations·filing 2009–2015
88Inventor score
Technology areasE21B
Top patents by PatentIndex Score
11 records- 0190US9476290B2Bottom hole firing head and methodUMPHRIES DON·Filed 2014·Granted Oct 25, 2016·14 cites·10 claims
- 0290US8919236B2Perforating gun drop subBELL WILLIAM T·Filed 2012·Granted Dec 30, 2014·15 cites·11 claims
- 0390US8910556B2Bottom hole firing head and methodUMPHRIES DON·Filed 2012·Granted Dec 16, 2014·15 cites·7 claims
- 0488US10119349B2Redundant drill string cutting systemUMPHRIES DON·Filed 2015·Granted Nov 6, 2018·7 cites·16 claims
- 0580US8286702B2Wireless downhole tool positioning systemUMPHRIES DON·Filed 2012·Granted Oct 16, 2012·6 cites·5 claims
- 0677US10240440B2Total control perforator and systemUMPHRIES DON·Filed 2015·Granted Mar 26, 2019·3 cites·13 claims
- 0771US8272441B2Wireless downhole tool positioning systemUMPHRIES DON·Filed 2011·Granted Sep 25, 2012·3 cites·27 claims
- 0869US9033032B2Wireless downhole tool positioning controlUMPHRIES DON·Filed 2012·Granted May 19, 2015·3 cites·14 claims
- 0966US8302693B2Wireless downhole tool positioning systemUMPHRIES DON·Filed 2012·Granted Nov 6, 2012·2 cites·4 claims
- 1050US10138688B2Wireless downhole tool positioning controlUMPHRIES DON·Filed 2015·Granted Nov 27, 2018·0 cites·18 claims
- 1140US2011061864A1Wireless pipe recovery and perforating systemUMPHRIES DON·Filed 2009·Application pending·0 cites
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