Inventor · disambiguated record
David Stephenson
Also filed as: STEPHENSON DAVID · STEPHENSON DAVID A · STEPHENSON DAVID ARTHUR · STEPHENSON DAVID L
9 granted patents·3 pending applications·497 citations·filing 1995–2024
90Inventor score
Files withHEWLETT PACKARD CO2STEPHENSON DAVID2ZYGO CORP2DEEP CASING TOOLS LTD1HEWLETT PACKARD DEVELOPMENT CO1
Top patents by PatentIndex Score
12 records- 0191US6119000AMethod and apparatus for tracking identity-code changes in a communications systemHEWLETT PACKARD CO·Filed 1997·Granted Sep 12, 2000·240 cites·19 claims
- 0282US7111282B2Instrumenting a software program and collecting data from the instrumented software program by typeHEWLETT PACKARD DEVELOPMENT CO·Filed 2001·Granted Sep 19, 2006·37 cites·19 claims
- 0382US5818632AMulti-element lens systemMELLES GRIOT INC·Filed 1995·Granted Oct 6, 1998·59 cites·21 claims
- 0478US6072581AGeometrically-desensitized interferometer incorporating an optical assembly with high stray-beam management capabilityZYGO CORP·Filed 1998·Granted Jun 6, 2000·47 cites·32 claims
- 0577US5884175AHandover following in a mobile radio systemHEWLETT PACKARD CO·Filed 1997·Granted Mar 16, 1999·87 cites·20 claims
- 0675US6643024B2Apparatus and method(s) for reducing the effects of coherent artifacts in an interferometerZYGO CORP·Filed 2001·Granted Nov 4, 2003·24 cites·14 claims
- 0752US10599231B2Tilt and position command system for input peripheralsSTEPHENSON DAVID A·Filed 2016·Granted Mar 24, 2020·0 cites·20 claims
- 0849US8510814B2Method and apparatus for network authentication of human interaction and user identityPRATTE WARREN·Filed 2008·Granted Aug 13, 2013·3 cites·22 claims
- 0947US12392200B2Fluid operated motor for running casing with bypass for pumping lost circulation materialDEEP CASING TOOLS LTD·Filed 2024·Granted Aug 19, 2025·0 cites·16 claims
- 1045US2016259433A1Tilt and position command system for input peripheralsSTEPHENSON DAVID·Filed 2015·Application pending·0 cites
- 1138US2011216004A1Tilt and position command system for input peripheralsSTEPHENSON DAVID·Filed 2011·Application pending·0 cites
- 1231US2003162475A1Interactive toy and method of control thereofFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →