Inventor · disambiguated record
Karol Constantine Hatzilias
Also filed as: HATZILIAS KAROL · HATZILIAS KAROL CONSTANTINE
60 granted patents·44 pending applications·403 citations·filing 2010–2025
98Inventor score
Files withUNITED SCIENCES LLC34META PLATFORMS TECH LLC30FACEBOOK TECH LLC29BERGLUND NATHANAEL6BERGMAN HARRIS1
Top patents by PatentIndex Score
104 records- 0199US10881287B1Multi-element prescription lenses with eye-trackingFACEBOOK TECH LLC·Filed 2018·Granted Jan 5, 2021·25 cites·17 claims
- 0298US11269406B1Systems and methods for calibrating eye trackingFACEBOOK TECH LLC·Filed 2019·Granted Mar 8, 2022·37 cites·20 claims
- 0397US11650426B2Holographic optical elements for eye-tracking illuminationMETA PLATFORMS TECH LLC·Filed 2020·Granted May 16, 2023·4 cites·20 claims
- 0497US11234095B1Adjusting acoustic parameters based on headset positionFACEBOOK TECH LLC·Filed 2020·Granted Jan 25, 2022·13 cites·20 claims
- 0597US10754145B1Apparatuses, systems, and methods for adjusting fluid lensesOCULUS VR LLC·Filed 2018·Granted Aug 25, 2020·23 cites·20 claims
- 0696US11561405B1Wavefront sensing with in-field illuminatorsMETA PLATFORMS TECH LLC·Filed 2020·Granted Jan 24, 2023·4 cites·20 claims
- 0796US10852817B1Eye tracking combiner having multiple perspectivesFACEBOOK TECH LLC·Filed 2018·Granted Dec 1, 2020·38 cites·20 claims
- 0896US10831268B1Systems and methods for using eye tracking to improve user interactions with objects in artificial realityFACEBOOK TECH LLC·Filed 2019·Granted Nov 10, 2020·30 cites·19 claims
- 0996US10725302B1Stereo imaging with Fresnel facets and Fresnel reflectionsFACEBOOK TECH LLC·Filed 2018·Granted Jul 28, 2020·24 cites·20 claims
- 1096US10718886B1Optical substrate and transparent routing of light sourcesFACEBOOK TECH LLC·Filed 2018·Granted Jul 21, 2020·17 cites·19 claims
- 1195US11650403B2Optical elements for beam-shaping and illuminationMETA PLATFORMS TECH LLC·Filed 2020·Granted May 16, 2023·4 cites·20 claims
- 1295US11455031B1In-field illumination for eye trackingMETA PLATFORMS TECH LLC·Filed 2018·Granted Sep 27, 2022·13 cites·20 claims
- 1394US12270992B2Beam shaping optic for light sourcesMETA PLATFORMS TECH LLC·Filed 2022·Granted Apr 8, 2025·2 cites·18 claims
- 1494US12073015B1Systems and methods for calibrating eye trackingMETA PLATFORMS TECH LLC·Filed 2022·Granted Aug 27, 2024·2 cites·20 claims
- 1593US10831267B1Systems and methods for virtually tagging objects viewed by friends and influencersFACEBOOK TECH LLC·Filed 2019·Granted Nov 10, 2020·14 cites·20 claims
- 1693US8841603B1Illumination for optical scan and measurementUNITED SCIENCES LLC·Filed 2013·Granted Sep 23, 2014·36 cites·21 claims
- 1792US11108977B1Dual wavelength eye imagingFACEBOOK TECH LLC·Filed 2020·Granted Aug 31, 2021·3 cites·20 claims
- 1891US11649935B2Coupling light source to photonic integrated circuitMETA PLATFORMS TECH LLC·Filed 2022·Granted May 16, 2023·2 cites·20 claims
- 1991US11205069B1Hybrid cornea and pupil trackingFACEBOOK TECH LLC·Filed 2020·Granted Dec 21, 2021·3 cites·13 claims
- 2091US10909405B1Virtual interest segmentationFACEBOOK TECH LLC·Filed 2019·Granted Feb 2, 2021·13 cites·20 claims
- 2190US11209649B1Optical lens assemblies, head-mounted displays, and related methodsFACEBOOK TECH LLC·Filed 2018·Granted Dec 28, 2021·3 cites·32 claims
- 2290US10983591B1Eye rankFACEBOOK TECH LLC·Filed 2019·Granted Apr 20, 2021·7 cites·20 claims
- 2389US11307415B1Head mounted display with active optics feedback and calibrationFACEBOOK TECH LLC·Filed 2019·Granted Apr 19, 2022·6 cites·17 claims
- 2489US10747009B1Symmetrical facet Fresnel combinerFACEBOOK TECHNOLOGIES LLC·Filed 2018·Granted Aug 18, 2020·5 cites·20 claims
- 2585US10852824B1Infrared light suppression in eye-tracking imagingFACEBOOK TECH LLC·Filed 2019·Granted Dec 1, 2020·4 cites·20 claims
- 2681US11148377B1Casting with deformable moldsFACEBOOK TECH LLC·Filed 2019·Granted Oct 19, 2021·1 cites·20 claims
- 2781US8900128B2Otoscanner with camera for video and scanningBERGLUND NATHANAEL·Filed 2012·Granted Dec 2, 2014·10 cites·16 claims
- 2881US8842273B2Optical measurement of drilled holesUNITED SCIENCES LLC·Filed 2013·Granted Sep 23, 2014·5 cites·17 claims
- 2980US8900130B2Otoscanner with safety warning systemBERGLUND NATHANAEL·Filed 2012·Granted Dec 2, 2014·9 cites·15 claims
- 3080US2023061866A1Multi-element prescription lenses with eye-trackingMETA PLATFORMS TECH LLC·Filed 2022·Application pending·0 cites
- 3180US2025130634A1Systems and methods for calibrating eye trackingMETA PLATFORMS TECH LLC·Filed 2024·Application pending·0 cites
- 3279US11977231B1Optical lens assembliesMETA PLATFORMS TECH LLC·Filed 2021·Granted May 7, 2024·0 cites·20 claims
- 3379US11391967B1Transparent circuit boards with multilayered tracesFACEBOOK TECH LLC·Filed 2019·Granted Jul 19, 2022·2 cites·20 claims
- 3479US9188775B2Optical scanning and measurementUNITED SCIENCES LLC·Filed 2013·Granted Nov 17, 2015·3 cites·25 claims
- 3579US8900129B2Video otoscanner with line-of-sight probe and screenBERGLUND NATHANAEL·Filed 2012·Granted Dec 2, 2014·8 cites·16 claims
- 3678US12474577B2Waveguide disparity sensingMETA PLATFORMS TECH LLC·Filed 2024·Granted Nov 18, 2025·0 cites·20 claims
- 3778US10852820B1Gaze-based virtual content controlFACEBOOK TECH LLC·Filed 2019·Granted Dec 1, 2020·2 cites·20 claims
- 3878US8900125B2Otoscanning with 3D modelingBERGLUND NATHANAEL·Filed 2012·Granted Dec 2, 2014·7 cites·10 claims
- 3977US8900127B2Otoscanner with pressure sensor for compliance measurementBERGLUND NATHANAEL·Filed 2012·Granted Dec 2, 2014·6 cites·3 claims
- 4077US8659764B2Estimating physical parameters using three dimensional representationsHATZILIAS KAROL·Filed 2010·Granted Feb 25, 2014·9 cites·23 claims
- 4177US2023038506A1Fabricating hybrid plastic-glass lensMETA PLATFORMS TECH LLC·Filed 2022·Application pending·0 cites
- 4274US11515469B1Multi-element prescription lenses with eye-trackingMETA PLATFORMS TECH LLC·Filed 2020·Granted Nov 29, 2022·0 cites·11 claims
- 4374US11428930B2Stray light suppression in eye-tracking imagingMETA PLATFORMS TECH LLC·Filed 2019·Granted Aug 30, 2022·1 cites·20 claims
- 4474US10914945B2Inconspicuous near-eye electrical circuitsFACEBOOK TECH LLC·Filed 2018·Granted Feb 9, 2021·1 cites·19 claims
- 4573US10886702B2Vertical-cavity surface-emitting laser for near-field illumination of an eyeFACEBOOK TECH LLC·Filed 2019·Granted Jan 5, 2021·1 cites·17 claims
- 4673US10877268B2Active control of in-field light sources of a head mounted displayFACEBOOK TECH LLC·Filed 2019·Granted Dec 29, 2020·1 cites·17 claims
- 4772US10942349B2Illumination assembly with in-field micro devicesFACEBOOK TECH LLC·Filed 2018·Granted Mar 9, 2021·1 cites·19 claims
- 4872US10884241B2Optical element for reducing stray infrared lightFACEBOOK TECH LLC·Filed 2019·Granted Jan 5, 2021·1 cites·20 claims
- 4972US2023087535A1Wavefront sensing from retina-reflected lightMETA PLATFORMS TECH LLC·Filed 2022·Application pending·0 cites
- 5071US12013531B1Active disparity sensing of head mounted displayMETA PLATFORMS TECH LLC·Filed 2022·Granted Jun 18, 2024·0 cites·20 claims
Showing the top 50 of 104 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →