Inventor · disambiguated record
David W. Wallis
Also filed as: STEWART WILLIAM H · WALLIS DAVID · WALLIS DAVID W · WALLIS DAVID WILLIAM
12 granted patents·56 citations·filing 1977–2023
87Inventor score
Files withMOTOROLA SOLUTIONS INC5MICROMASS LTD2ELECTROMAGNETIC SCIENCES INC1IN A PINCH INC1S W I S INC1
Top patents by PatentIndex Score
12 records- 0186US4162461AApparatus for extracting the fundamental frequency from a complex audio wave formS W I S INC·Filed 1977·Granted Jul 24, 1979·31 cites·4 claims
- 0276US12123421B2Bench-top time of flight mass spectrometerMICROMASS LTD·Filed 2023·Granted Oct 22, 2024·0 cites·19 claims
- 0372US7855623B2Low loss RF transmission lines having a reference conductor with a recess portion opposite a signal conductorTESSERA INC·Filed 2007·Granted Dec 21, 2010·5 cites·27 claims
- 0471US9711973B2Wireless power transfer using a microwave signalMOTOROLA SOLUTIONS INC·Filed 2015·Granted Jul 18, 2017·1 cites·13 claims
- 0571US9231481B2Power converter apparatusMOTOROLA SOLUTIONS INC·Filed 2013·Granted Jan 5, 2016·4 cites·29 claims
- 0659US11879470B2Bench-top time of flight mass spectrometerMICROMASS LTD·Filed 2019·Granted Jan 23, 2024·0 cites·16 claims
- 0749US9780571B2Methods and systems for providing a ballast load for a magnetic resonant power supplyMOTOROLA SOLUTIONS INC·Filed 2014·Granted Oct 3, 2017·0 cites·15 claims
- 0849US8803117B2Apparatus and method for non-latching, bi-directional communication over an electrically isolated data linkWALLIS DAVID W·Filed 2012·Granted Aug 12, 2014·1 cites·20 claims
- 0947US9837849B2Ultrasonic charging apparatus, system and methodMOTOROLA SOLUTIONS INC·Filed 2015·Granted Dec 5, 2017·0 cites·10 claims
- 1045US5089716ASimplified driver for controlled flux ferrite phase shifterELECTROMAGNETIC SCIENCES INC·Filed 1989·Granted Feb 18, 1992·10 cites·23 claims
- 1138US10065212B2Ultrasonic transmitterMOTOROLA SOLUTIONS INC·Filed 2015·Granted Sep 4, 2018·0 cites·16 claims
- 1221US5848135ABattery-powered adapterIN A PINCH INC·Filed 1995·Granted Dec 8, 1998·4 cites·23 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →