Assignee
CHURCHILL DRILLING TOOLS LTD
GB·14 granted patents·1 pending application·78 citations·filing 2004–2021
Top patents by PatentIndex Score
15 records- 0191US10544655B2Method and apparatus for severing a drill stringCHURCHILL DRILLING TOOLS LTD·Filed 2015·Granted Jan 28, 2020·7 cites·57 claims
- 0285US10458204B2Downhole toolCHURCHILL DRILLING TOOLS LTD·Filed 2015·Granted Oct 29, 2019·4 cites·51 claims
- 0384US11802462B2Downhole sealingCHURCHILL DRILLING TOOLS LTD·Filed 2021·Granted Oct 31, 2023·1 cites·18 claims
- 0484US11187059B2Downhole sealingCHURCHILL DRILLING TOOLS LTD·Filed 2016·Granted Nov 30, 2021·3 cites·22 claims
- 0583US10590737B2Downhole sealing and actuationCHURCHILL DRILLING TOOLS LTD·Filed 2016·Granted Mar 17, 2020·3 cites·50 claims
- 0670US10088064B2Drill string check valveCHURCHILL DRILLING TOOLS LTD·Filed 2012·Granted Oct 2, 2018·4 cites·27 claims
- 0770US9920583B2Drill string check valveCHURCHILL DRILLING TOOLS LTD·Filed 2014·Granted Mar 20, 2018·3 cites·44 claims
- 0866US7766084B2Downhole toolCHURCHILL DRILLING TOOLS LTD·Filed 2004·Granted Aug 3, 2010·41 cites·28 claims
- 0964US7828060B2Drifting tubingCHURCHILL DRILLING TOOLS LTD·Filed 2008·Granted Nov 9, 2010·8 cites·48 claims
- 1056US10267107B2Downhole toolCHURCHILL DRILLING TOOLS LTD·Filed 2016·Granted Apr 23, 2019·0 cites·20 claims
- 1147US9828818B2Downhole apparatusCHURCHILL DRILLING TOOLS LTD·Filed 2013·Granted Nov 28, 2017·0 cites·39 claims
- 1246US11293264B2Downhole apparatus and methodsCHURCHILL DRILLING TOOLS LTD·Filed 2017·Granted Apr 5, 2022·0 cites·46 claims
- 1343US7975766B2Top filling tubingCHURCHILL DRILLING TOOLS LTD·Filed 2007·Granted Jul 12, 2011·2 cites·31 claims
- 1442US2015204150A1Apparatus and methods for use with drilling fluidsCHURCHILL DRILLING TOOLS LTD·Filed 2013·Application pending·0 cites
- 1540US7472749B2Drifting tubingCHURCHILL DRILLING TOOLS LTD·Filed 2004·Granted Jan 6, 2009·2 cites·4 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →