Inventor · disambiguated record
K. J. Ray Liu
Also filed as: LIU K C · LIU K CLIVE · LIU K J RAY
94 granted patents·15 pending applications·1,388 citations·filing 1992–2025
99Inventor score
Top patents by PatentIndex Score
109 records- 0197USD967176SDisplay screen or portion thereof with animated graphical user interfaceMAI CHAO LUN·Filed 2021·Granted Oct 18, 2022·44 cites·1 claims
- 0297US11391830B2Method, apparatus, and system for qualified wireless sensingAU OSCAR CHI LIM·Filed 2020·Granted Jul 19, 2022·10 cites·30 claims
- 0397US10742475B2Method, apparatus, and system for object tracking sensing using broadcastingORIGIN WIRELESS INC·Filed 2019·Granted Aug 11, 2020·22 cites·28 claims
- 0497US10270642B2Method, apparatus, and system for object tracking and navigationORIGIN WIRELESS INC·Filed 2018·Granted Apr 23, 2019·40 cites·30 claims
- 0597US9887864B1Methods, devices and systems of heterogeneous time-reversal paradigm enabling direct connectivity in internet of thingsORIGIN WIRELESS INC·Filed 2016·Granted Feb 6, 2018·30 cites·20 claims
- 0696USD1035672SDisplay screen or portion thereof with graphical user interfaceMAI CHAO LUN·Filed 2020·Granted Jul 16, 2024·39 cites·1 claims
- 0796US11770197B2Method, apparatus, and system for accurate wireless monitoringZHANG FENG·Filed 2020·Granted Sep 26, 2023·19 cites·29 claims
- 0896US11639981B2Method, apparatus, and system for movement trackingWU CHENSHU·Filed 2021·Granted May 2, 2023·11 cites·29 claims
- 0996US11448727B2Method, apparatus, and system for human recognition based on gait featuresOZTURK MUHAMMED ZAHID·Filed 2021·Granted Sep 20, 2022·8 cites·28 claims
- 1096US11340345B2Method, apparatus, and system for wireless object trackingWU CHENSHU·Filed 2020·Granted May 24, 2022·8 cites·30 claims
- 1196US10866302B2Method, apparatus, and system for wireless inertial measurementORIGIN WIRELESS INC·Filed 2020·Granted Dec 15, 2020·12 cites·29 claims
- 1296US10327213B1Time-reversal communication systemsORIGIN WIRELESS INC·Filed 2016·Granted Jun 18, 2019·40 cites·19 claims
- 1395US11531087B2Method, apparatus, and system for fall-down detection based on a wireless signalHU YUQIAN·Filed 2021·Granted Dec 20, 2022·7 cites·25 claims
- 1495US11500058B2Method, apparatus, and system for wireless proximity sensingHU YUQIAN·Filed 2021·Granted Nov 15, 2022·10 cites·24 claims
- 1595US11500056B2Method, apparatus, and system for wireless tracking with graph-based particle filteringWU CHENSHU·Filed 2020·Granted Nov 15, 2022·6 cites·29 claims
- 1695US11408978B2Method, apparatus, and system for vital signs monitoring using high frequency wireless signalsWANG FENGYU·Filed 2020·Granted Aug 9, 2022·11 cites·28 claims
- 1795USD956070SDisplay screen or portion thereof with animated graphical user interfaceMAI CHAO LUN·Filed 2020·Granted Jun 28, 2022·27 cites·1 claims
- 1895US9538040B2Active sensing for dynamic spectrum accessUNIV MARYLAND·Filed 2012·Granted Jan 3, 2017·320 cites·23 claims
- 1995US9402245B2Time-reversal wireless paradigm for internet of thingsORIGIN WIRELESS INC·Filed 2015·Granted Jul 26, 2016·16 cites·14 claims
- 2094US12153156B2Method, apparatus, and system for wireless monitoring with improved accuracyOZTURK MUHAMMED ZAHID·Filed 2023·Granted Nov 26, 2024·4 cites·19 claims
- 2194US10374863B2Apparatus, systems and methods for event recognition based on a wireless signalORIGIN WIRELESS INC·Filed 2018·Granted Aug 6, 2019·15 cites·30 claims
- 2294US10291460B2Method, apparatus, and system for wireless motion monitoringORIGIN WIRELESS INC·Filed 2018·Granted May 14, 2019·10 cites·28 claims
- 2394US10129862B1Methods, devices, apparatus, and systems for medium access control in wireless communication systems utilizing spatial focusing effectORIGIN WIRELESS INC·Filed 2017·Granted Nov 13, 2018·18 cites·21 claims
- 2494US9900794B2Time-reversal wireless systems having asymmetric architectureORIGIN WIRELESS INC·Filed 2014·Granted Feb 20, 2018·18 cites·21 claims
- 2593US11953618B2Method, apparatus, and system for wireless motion recognitionREGANI SAI DEEPIKA·Filed 2021·Granted Apr 9, 2024·4 cites·29 claims
- 2693US11397258B2Method, apparatus, and system for outdoor target trackingZENG XIAOLU·Filed 2020·Granted Jul 26, 2022·13 cites·25 claims
- 2793US10397039B2Apparatus, systems and methods for fall-down detection based on a wireless signalORIGIN WIRELESS INC·Filed 2018·Granted Aug 27, 2019·12 cites·30 claims
- 2893US10380881B2Method, apparatus, and systems for wireless event detection and monitoringORIGIN WIRELESS INC·Filed 2016·Granted Aug 13, 2019·18 cites·19 claims
- 2993US10009148B1Time-reversal technologies for hybrid wireless networksORIGIN WIRELESS INC·Filed 2016·Granted Jun 26, 2018·11 cites·20 claims
- 3092US12290230B2Method, apparatus, and system for automatic and adaptive wireless monitoring and trackingMAI CHAO LUN·Filed 2021·Granted May 6, 2025·3 cites·12 claims
- 3192US12046040B2Method, apparatus, and system for people counting and recognition based on rhythmic motion monitoringWANG FENGYU·Filed 2020·Granted Jul 23, 2024·5 cites·28 claims
- 3292USD997162SCommand deviceMAI CHAO LUN·Filed 2020·Granted Aug 29, 2023·22 cites·1 claims
- 3392US11592913B2Method, apparatus, and system for wireless writing trackingREGANI SAI DEEPIKA·Filed 2021·Granted Feb 28, 2023·4 cites·24 claims
- 3492US9883511B1Waveform design for time-reversal systemsWIRELESS INC·Filed 2012·Granted Jan 30, 2018·35 cites·57 claims
- 3592US9794156B2Handshaking protocol for time-reversal systemORIGIN WIRELESS INC·Filed 2016·Granted Oct 17, 2017·8 cites·15 claims
- 3692US9226304B2Time-reversal wireless paradigm for internet of thingsORIGIN WIRELESS COMMUNICATIONS INC·Filed 2014·Granted Dec 29, 2015·16 cites·38 claims
- 3791US12272375B2Method, apparatus, and system for voice activity detection based on radio signalsOZTURK MUHAMMED ZAHID·Filed 2022·Granted Apr 8, 2025·2 cites·18 claims
- 3891US11448728B2Method, apparatus, and system for sound sensing based on wireless signalsOZTURK MUHAMMED ZAHID·Filed 2021·Granted Sep 20, 2022·2 cites·30 claims
- 3991US10735298B2Method, apparatus, server and system for vital sign detection and monitoringORIGIN WIRELESS INC·Filed 2018·Granted Aug 4, 2020·16 cites·30 claims
- 4091US10495725B2Method, apparatus, server and system for real-time vital sign detection and monitoringORIGIN WIRELESS INC·Filed 2018·Granted Dec 3, 2019·11 cites·28 claims
- 4191US9781700B2Time-reversal wireless paradigm for internet of thingsORIGIN WIRELESS INC·Filed 2016·Granted Oct 3, 2017·7 cites·20 claims
- 4291US7720168B2Systems and methods for coding in broadband wireless communication systems to achieve maximum diversity in space, time and frequencyUNIV MARYLAND·Filed 2005·Granted May 18, 2010·39 cites·20 claims
- 4390US10168414B2Wireless signals and techniques for determining locations of objects in multi-path environmentsORIGIN WIRELESS INC·Filed 2015·Granted Jan 1, 2019·12 cites·20 claims
- 4489US11444710B2Method, apparatus, and system for processing and presenting life log based on a wireless signalBUGOS DAN·Filed 2020·Granted Sep 13, 2022·5 cites·30 claims
- 4589US10833912B2Methods, devices, servers, apparatus, and systems for wireless internet of things applicationsORIGIN WIRELESS INC·Filed 2018·Granted Nov 10, 2020·8 cites·20 claims
- 4689US10609711B1Time-reversal scalability for high network densificationORIGIN WIRELESS INC·Filed 2016·Granted Mar 31, 2020·7 cites·28 claims
- 4789US9825838B2Handshaking protocol for time-reversal systemORIGIN WIRELESS INC·Filed 2016·Granted Nov 21, 2017·7 cites·21 claims
- 4889US9686054B2Joint waveform design and interference pre-cancellation for time-reversal systemsORIGIN WIRELESS COMMUNICATIONS INC·Filed 2015·Granted Jun 20, 2017·11 cites·48 claims
- 4989US9559874B2Multiuser time-reversal division multiple access uplink system with parallel interference cancellationORIGIN WIRELESS COMMUNICATIONS INC·Filed 2013·Granted Jan 31, 2017·11 cites·53 claims
- 5089US9407306B2Quadrature amplitude modulation for time-reversal systemsORIGIN WIRELESS INC·Filed 2014·Granted Aug 2, 2016·10 cites·26 claims
Showing the top 50 of 109 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →