Inventor · disambiguated record
David Michel Harrington
Also filed as: HARRINGTON DAVID · HARRINGTON DAVID M · HARRINGTON DAVID MICHEL
11 granted patents·4 pending applications·5 citations·filing 2010–2018
81Inventor score
Top patents by PatentIndex Score
15 records- 0162US10590525B2Modified surface properties of percussion tools used in downhole drillingVAREL INT IND LP·Filed 2018·Granted Mar 17, 2020·0 cites·11 claims
- 0260US8534389B2Method and apparatus for reducing lubricant pressure pulsation within a rotary cone rock bitGALLIFET THOMAS·Filed 2011·Granted Sep 17, 2013·2 cites·27 claims
- 0359US9376866B2Hybrid rotary cone drill bitVAREL INT IND LP·Filed 2013·Granted Jun 28, 2016·2 cites·14 claims
- 0454US9951409B2Modified surface properties of percussion tools used in downhole drillingVAREL INT IND LP·Filed 2015·Granted Apr 24, 2018·0 cites·20 claims
- 0551US2019063161A1Hybrid rotary cone drill bitVAREL INT IND LP·Filed 2018·Application pending·0 cites
- 0648US10538970B2Method for drilling out a plug using a hybrid rotary cone drill bitVAREL INT IND LP·Filed 2016·Granted Jan 21, 2020·0 cites·20 claims
- 0746US9260922B2Roller cone drill bit with cuttings evacuatorKONGAMNACH AMNACH·Filed 2012·Granted Feb 16, 2016·1 cites·27 claims
- 0844US2016076307A1Composite diaphragm for roller cone pressure compensation systemVAREL INT IND LP·Filed 2014·Application pending·0 cites
- 0943US8403079B2Rock bit having a seal gland with a conical sealing surfaceGALLIFET THOMAS·Filed 2010·Granted Mar 26, 2013·0 cites·19 claims
- 1043US8393418B2Rock bit having a seal gland with a conical sealing surfaceGALLIFET THOMAS·Filed 2010·Granted Mar 12, 2013·0 cites·21 claims
- 1141US9404342B2Top mounted choke for percussion toolVAREL INT IND LP·Filed 2013·Granted Aug 2, 2016·0 cites·38 claims
- 1238US9488007B2Wear resistant plates on a leading transitional surface of the leg for a rotary cone drill bitVAREL INT IND LP·Filed 2014·Granted Nov 8, 2016·0 cites·22 claims
- 1337US2015299514A1Industrial tools with thermoset coatingVAREL INT IND LP·Filed 2015·Application pending·0 cites
- 1433US2015226007A1Drill bit for horizontal directional drillingVAREL INT IND LP·Filed 2015·Application pending·0 cites
- 1531US9415496B2Double wall flow tube for percussion toolVAREL INTERATIONAL IND L P·Filed 2013·Granted Aug 16, 2016·0 cites·25 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →