Inventor · disambiguated record
Keith A. Nelson
Also filed as: NELSON KEITH · NELSON KEITH A · NELSON KEITH ADAM
48 granted patents·4 pending applications·1,849 citations·filing 1994–2024
99Inventor score
Files withMASSACHUSETTS INST TECHNOLOGY20SENDERS CONSTRUCTION LLC8ACTIVE IMPULSE SYSTEMS INC4NELSON KEITH4NELSON KEITH A2
Top patents by PatentIndex Score
52 records- 0199US5999308AMethods and systems for introducing electromagnetic radiation into photonic crystalsMASSACHUSETTS INST TECHNOLOGY·Filed 1998·Granted Dec 7, 1999·355 cites·35 claims
- 0297US5633711AMeasurement of material properties with optically induced phononsMASSACHUSETTS INST TECHNOLOGY·Filed 1994·Granted May 27, 1997·149 cites·58 claims
- 0394US6348967B1Method and device for measuring the thickness of opaque and transparent filmsACTIVE IMPULSE SYSTEMS INC·Filed 2000·Granted Feb 19, 2002·65 cites·31 claims
- 0492US6479822B1System and Method for terahertz frequency measurementsMASSACHUSETTS INST TECHNOLOGY·Filed 2000·Granted Nov 12, 2002·73 cites·37 claims
- 0592US5982482ADetermining the presence of defects in thin film structuresMASSACHUSETTS INST TECHNOLOGY·Filed 1997·Granted Nov 9, 1999·109 cites·16 claims
- 0692US5812261AMethod and device for measuring the thickness of opaque and transparent filmsACTIVE IMPULSE SYSTEMS INC·Filed 1997·Granted Sep 22, 1998·102 cites·33 claims
- 0791US6349128B1Method and device using x-rays to measure thickness and composition of thin filmsPHILIPS ELECTRONICS NA·Filed 2000·Granted Feb 19, 2002·44 cites·37 claims
- 0891US6081330AMethod and device for measuring the thickness of opaque and transparent filmsACTIVE IMPULSE SYSTEMS INC·Filed 1998·Granted Jun 27, 2000·88 cites·10 claims
- 0991US5546811AOptical measurements of stress in thin film materialsMASSACHUSETTS INSTITTUE OF TEC·Filed 1995·Granted Aug 20, 1996·105 cites·22 claims
- 1089US5682262AMethod and device for generating spatially and temporally shaped optical waveformsMASSACHUSETTS INST TECHNOLOGY·Filed 1995·Granted Oct 28, 1997·107 cites·21 claims
- 1188US9366576B2Detection of electromagnetic radiation using nonlinear materialsMASSACHUSETTS INST TECHNOLOGY·Filed 2015·Granted Jun 14, 2016·4 cites·24 claims
- 1285US6795198B1Method and device for measuring thin films and semiconductor substrates using reflection mode geometryFiled 1998·Granted Sep 21, 2004·72 cites·35 claims
- 1385US5672830AMeasuring anisotropic mechanical properties of thin filmsMASSACHUSETTS INST TECHNOLOGY·Filed 1996·Granted Sep 30, 1997·75 cites·18 claims
- 1484US9000376B2Detection of electromagnetic radiation using nonlinear materialsHWANG HAROLD Y·Filed 2013·Granted Apr 7, 2015·6 cites·21 claims
- 1584US7348569B2Acceleration of charged particles using spatially and temporally shaped electromagnetic radiationMASSACHUSETTS INST TECHNOLOGY·Filed 2005·Granted Mar 25, 2008·32 cites·29 claims
- 1684US6075640ASignal processing by optically manipulating polaritonsMASSACHUSETTS INST TECHNOLOGY·Filed 1998·Granted Jun 13, 2000·71 cites·41 claims
- 1783US7387027B2Characterization of materials with optically shaped acoustic waveformsMASSACHUSETTS INST TECHNOLOGY·Filed 2005·Granted Jun 17, 2008·15 cites·28 claims
- 1883US6069703AMethod and device for simultaneously measuring the thickness of multiple thin metal films in a multilayer structureACTIVE IMPULSE SYSTEMS INC·Filed 1998·Granted May 30, 2000·69 cites·38 claims
- 1982US7601977B2Phase-matched terahertz emitterMASSACHUSETTS INST TECHNOLOGY·Filed 2006·Granted Oct 13, 2009·11 cites·47 claims
- 2082US5734470ADevice and method for time-resolved optical measurementsMASSACHUSETTS INST TECHNOLOGY·Filed 1997·Granted Mar 31, 1998·58 cites·32 claims
- 2181US9945914B2Systems, apparatus, and methods of nonlinear terahertz (THz) magnetic resonance measurementHwang Harold Young·Filed 2017·Granted Apr 17, 2018·3 cites·23 claims
- 2281US5719650AHigh-fidelity spatial light modulatorMASSACHUSETTS INST TECHNOLOGY·Filed 1995·Granted Feb 17, 1998·76 cites·20 claims
- 2378USD765452SLetter I chairNELSON KEITH·Filed 2016·Granted Sep 6, 2016·10 cites·1 claims
- 2477USD786596SLetter O chairNELSON KEITH·Filed 2016·Granted May 16, 2017·9 cites·1 claims
- 2577USD735511SLetter E chairNELSON KEITH·Filed 2013·Granted Aug 4, 2015·11 cites·1 claims
- 2675US9810578B2Systems, methods, and apparatus for radiation detectionPein Brandt Christopher·Filed 2016·Granted Nov 7, 2017·3 cites·26 claims
- 2775USD699993SLetter A chairNELSON KEITH·Filed 2011·Granted Feb 25, 2014·11 cites·1 claims
- 2874US10495703B2Systems, apparatus, and methods of nonlinear terahertz (THz) magnetic resonance measurementMASSACHUSETTS INST TECHNOLOGY·Filed 2018·Granted Dec 3, 2019·1 cites·20 claims
- 2974USD826612SLetter S chairSENDERS CONSTRUCTION LLC·Filed 2017·Granted Aug 28, 2018·7 cites·1 claims
- 3072US7846330B2Oil filter drain toolNELSON KEITH A·Filed 2008·Granted Dec 7, 2010·7 cites·9 claims
- 3170USD807092SLetter U chairSENDER'S CONSTRUCTION LLC·Filed 2017·Granted Jan 9, 2018·7 cites·1 claims
- 3269USD854868SLetter R chairSENDERS CONSTRUCTION LLC·Filed 2019·Granted Jul 30, 2019·5 cites·1 claims
- 3368USD846931SLetter y chairSENDERS CONSTRUCTION LLC·Filed 2018·Granted Apr 30, 2019·5 cites·1 claims
- 3466US7495816B2Diffraction-based pulse shaping with a 2D optical modulatorMASSACHUSETTS INST TECHNOLOGY·Filed 2005·Granted Feb 24, 2009·3 cites·32 claims
- 3564US6204926B1Methods and system for optically correlating ultrashort optical waveformsMASSACHUSETTS INST TECHNOLOGY·Filed 1999·Granted Mar 20, 2001·35 cites·22 claims
- 3662USD899835SLetter M chairSENDERS CONSTRUCTION LLC·Filed 2020·Granted Oct 27, 2020·1 cites·1 claims
- 3762USD889178SLetter N chairSENDERS CONSTRUCTION LLC·Filed 2020·Granted Jul 7, 2020·1 cites·1 claims
- 3862US6717717B2Dynamic wavelength shifting methodMASSACHUSETTS INST TECHNOLOGY·Filed 2001·Granted Apr 6, 2004·7 cites·48 claims
- 3961US10241058B2Systems and methods for quality control of a periodic structureMAZNEV ALEXEI·Filed 2017·Granted Mar 26, 2019·1 cites·16 claims
- 4060US6482138B1Rotational friction exercise device selectively attached to a support surfaceFiled 2000·Granted Nov 19, 2002·11 cites·7 claims
- 4159US2025104883A1Apparatus for laser-driven inertial confinement and tritium productionMASSACHUSETTS INST TECHNOLOGY·Filed 2024·Application pending·0 cites
- 4255US10024723B2Detection of electromagnetic radiation using nonlinear materialsMASSACHUSETTS INST TECHNOLOGY·Filed 2016·Granted Jul 17, 2018·0 cites·13 claims
- 4353USD878129SLetter L chairSENDERS CONSTRUCTION LLC·Filed 2019·Granted Mar 17, 2020·2 cites·1 claims
- 4452USD868519SLetter T chairSENDERS CONSTRUCTION LLC·Filed 2019·Granted Dec 3, 2019·2 cites·1 claims
- 4552US2023163154A1Terahertz wave-visible light conversion device and image sensing device including the sameSAMSUNG ELECTRONICS CO LTD·Filed 2022·Application pending·0 cites
- 4649USD915115SLetter D chairSENDERS CONSTRUCTION LLC·Filed 2020·Granted Apr 6, 2021·0 cites·1 claims
- 4746US9829379B2Two-dimensional spectroscopy system and two-dimensional spectroscopic analysis methodSAMSUNG ELECTRONICS CO LTD·Filed 2015·Granted Nov 28, 2017·0 cites·19 claims
- 4846US9074936B2Multidimensional pulse shaper and spectrometerNELSON KEITH A·Filed 2008·Granted Jul 7, 2015·1 cites·36 claims
- 4945US2018100767A1Systems, methods, and apparatus for radiation detectionPein Brandt Christopher·Filed 2017·Application pending·0 cites
- 5041US6356349B1Polariton wave imagingMASSACHUSETTS INST TECHNOLOGY·Filed 1999·Granted Mar 12, 2002·10 cites·23 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →