Inventor · disambiguated record
David Llewellyn Mallis
Also filed as: MALLIS DAVID · MALLIS DAVID L · MALLIS DAVID LLEWELLYN
14 granted patents·3 pending applications·495 citations·filing 1996–2013
94Inventor score
Top patents by PatentIndex Score
17 records- 0191US6158785AMulti-start wedge thread for tubular connectionHYDRIL CO·Filed 1998·Granted Dec 12, 2000·112 cites·35 claims
- 0289US7690696B2Wedge thread with torque shoulderHYDRIL CO·Filed 2001·Granted Apr 6, 2010·37 cites·10 claims
- 0388US7988205B2Wedge thread with torque shoulderHYDRIL CO·Filed 2010·Granted Aug 2, 2011·11 cites·6 claims
- 0487US6206436B1Differential wedge thread for threaded connectorHYDRIL CO·Filed 1999·Granted Mar 27, 2001·123 cites·25 claims
- 0586US6626471B2Double flex seal for tubular connectionHYDRIL CO·Filed 2001·Granted Sep 30, 2003·35 cites·21 claims
- 0681US5794985AThreaded pipe connectionHYDRIL CO·Filed 1996·Granted Aug 18, 1998·95 cites·9 claims
- 0777US7575255B2Wedge thread with high-angle metal sealHYDRIL LLC·Filed 2006·Granted Aug 18, 2009·9 cites·19 claims
- 0876US7527304B2Floating wedge thread for tubular connectionHYDRIL LLC·Filed 2004·Granted May 5, 2009·22 cites·36 claims
- 0972US7014212B2Tubular joint wear indicatorHYDRIL CO LP·Filed 2001·Granted Mar 21, 2006·15 cites·23 claims
- 1070US8668233B2Threaded connection with perturbed flanksMALLIS DAVID LLEWELLYN·Filed 2006·Granted Mar 11, 2014·6 cites·11 claims
- 1163US6530607B1Two-step threaded connector having differential thread widthHYDRIL CO·Filed 2000·Granted Mar 11, 2003·28 cites·16 claims
- 1262US8984734B2Step-to-step wedge thread connections and related methodsHYDRIL CO·Filed 2013·Granted Mar 24, 2015·1 cites·6 claims
- 1361US8496274B2Step-to-step wedge thread connections and related methodsMALLIS DAVID LLEWELLYN·Filed 2011·Granted Jul 30, 2013·1 cites·23 claims
- 1447US2012074693A1Step-to-step wedge thread connections and related methodsMALLIS DAVID LLEWELLYN·Filed 2010·Application pending·0 cites
- 1545US9052041B2Wedge threads with a solid lubricant coatingMALLIS DAVID LLEWELLYN·Filed 2011·Granted Jun 9, 2015·0 cites·13 claims
- 1642US2004108720A1Double flex seal for tubular connectionFiled 2003·Application pending·0 cites
- 1736US2011084477A1Wedge threads with a solid lubricant coatingHYDRIL CO·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →