Inventor · disambiguated record
David Holmgren
Also filed as: HOLMGREN DAVID · HOLMGREN DAVID E · HOLMGREN DAVID ERIC
20 granted patents·6 pending applications·896 citations·filing 2001–2025
95Inventor score
Files withSMART TECHNOLOGIES ULC12HILL DOUGLAS B2MORRISON GERALD D2NUREVA INC2SMART TECHNOLOGIES INC2
Top patents by PatentIndex Score
26 records- 0198US7692625B2Camera-based touch systemSMART TECHNOLOGIES ULC·Filed 2001·Granted Apr 6, 2010·251 cites·56 claims
- 0297US7532206B2System and method for differentiating between pointers used to contact touch surfaceSMART TECHNOLOGIES ULC·Filed 2003·Granted May 12, 2009·176 cites·43 claims
- 0396US7355593B2Pointer tracking across multiple overlapping coordinate input sub-regions defining a generally contiguous input regionSMART TECHNOLOGIES INC·Filed 2004·Granted Apr 8, 2008·165 cites·57 claims
- 0496US6919880B2Calibrating camera offsets to facilitate object position determination using triangulationSMART TECHNOLOGIES INC·Filed 2001·Granted Jul 19, 2005·151 cites·33 claims
- 0593US7492357B2Apparatus and method for detecting a pointer relative to a touch surfaceSMART TECHNOLOGIES ULC·Filed 2004·Granted Feb 17, 2009·75 cites·75 claims
- 0689US7686460B2Method and apparatus for inhibiting a subject's eyes from being exposed to projected lightSMART TECHNOLOGIES ULC·Filed 2007·Granted Mar 30, 2010·11 cites·28 claims
- 0784US8089462B2Pointer tracking across multiple overlapping coordinate input sub-regions defining a generally contiguous input regionHILL DOUGLAS B·Filed 2008·Granted Jan 3, 2012·12 cites·16 claims
- 0882US12356146B2System for dynamically determining the location of and calibration of spatially placed transducers for the purpose of forming a single physical microphone arrayNUREVA INC·Filed 2023·Granted Jul 8, 2025·1 cites·22 claims
- 0982US7984995B2Method and apparatus for inhibiting a subject's eyes from being exposed to projected lightSMART TECHNOLOGIES ULC·Filed 2006·Granted Jul 26, 2011·8 cites·44 claims
- 1081US9207812B2Interactive input system and methodSMART TECHNOLOGIES ULC·Filed 2013·Granted Dec 8, 2015·8 cites·39 claims
- 1178US8576172B2Pointer tracking across multiple overlapping coordinate input sub-regions defining a generally contiguous input regionHILL DOUGLAS B·Filed 2011·Granted Nov 5, 2013·4 cites·46 claims
- 1278US8456451B2System and method for differentiating between pointers used to contact touch surfaceMORRISON GERALD D·Filed 2008·Granted Jun 4, 2013·7 cites·21 claims
- 1377US8600107B2Interactive input system and methodHOLMGREN DAVID·Filed 2011·Granted Dec 3, 2013·7 cites·20 claims
- 1476US8872772B2Interactive input system and pen tool thereforTHOMPSON SEAN·Filed 2010·Granted Oct 28, 2014·5 cites·10 claims
- 1576US8692768B2Interactive input systemCHTCHETININE ALEX·Filed 2009·Granted Apr 8, 2014·11 cites·14 claims
- 1672US2025310682A1System for dynamically determining the location of and calibration of spatially placed transducers for the purpose of forming a single physical microphone arrayNUREVA INC·Filed 2025·Application pending·0 cites
- 1764US9658702B2System and method of object recognition for an interactive input systemSMART TECHNOLOGIES ULC·Filed 2015·Granted May 23, 2017·1 cites·21 claims
- 1864US9329700B2Interactive system with successively activated illumination sourcesMCGIBNEY GRANT·Filed 2011·Granted May 3, 2016·2 cites·13 claims
- 1963US9176627B2Camera-based touch systemMORRISON GERALD·Filed 2010·Granted Nov 3, 2015·1 cites·34 claims
- 2051US2009146972A1Apparatus and method for detecting a pointer relative to a touch surfaceSMART TECHNOLOGIES ULC·Filed 2009·Application pending·0 cites
- 2149US2010182416A1Method and apparatus for inhibiting a subject's eyes from being exposed to projected lightSMART TECHNOLOGIES ULC·Filed 2010·Application pending·0 cites
- 2247US9360966B2Method for generally continuously calibrating an interactive input systemSMART TECHNOLOGIES ULC·Filed 2013·Granted Jun 7, 2016·0 cites·49 claims
- 2347US2010079385A1Method for calibrating an interactive input system and interactive input system executing the calibration methodSMART TECHNOLOGIES ULC·Filed 2008·Application pending·0 cites
- 2445US10228771B2System and method of pointer detection for interactive inputSMART TECHNOLOGIES ULC·Filed 2016·Granted Mar 12, 2019·0 cites·46 claims
- 2539US2012249422A1Interactive input system and methodTSE EDWARD·Filed 2011·Application pending·0 cites
- 2635US2012007804A1Interactive input system and methodMORRISON GERALD D·Filed 2010·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →