Inventor · disambiguated record
Qicai Shi
Also filed as: SHI QICAI
52 granted patents·4 pending applications·1,481 citations·filing 2000–2020
99Inventor score
Top patents by PatentIndex Score
56 records- 0198US10459103B1Magnetic entry portal identification systemAMAZON TECH INC·Filed 2016·Granted Oct 29, 2019·135 cites·20 claims
- 0298US10262294B1Location estimation using array of capacitive sensorsAMAZON TECH INC·Filed 2016·Granted Apr 16, 2019·66 cites·20 claims
- 0398US10198710B1System to determine a change in weight at a load cellAMAZON TECH INC·Filed 2016·Granted Feb 5, 2019·184 cites·20 claims
- 0498US6745038B2Intra-piconet location determination and tomographyMOTOROLA INC·Filed 2001·Granted Jun 1, 2004·224 cites·38 claims
- 0597US10520353B1System to process load cell dataAMAZON TECH INC·Filed 2016·Granted Dec 31, 2019·19 cites·20 claims
- 0697US10244363B1Entry portal identification systemAMAZON TECH INC·Filed 2015·Granted Mar 26, 2019·119 cites·21 claims
- 0797US10007892B1Capacitive sensor systemAMAZON TECH INC·Filed 2016·Granted Jun 26, 2018·40 cites·20 claims
- 0896US10591348B1System to process load cell data using door sensor dataAMAZON TECH INC·Filed 2016·Granted Mar 17, 2020·19 cites·20 claims
- 0995US7171476B2Protocol and structure for self-organizing networkMOTOROLA INC·Filed 2002·Granted Jan 30, 2007·177 cites·51 claims
- 1094US10520352B1System to validate load cell dataAMAZON TECH INC·Filed 2016·Granted Dec 31, 2019·13 cites·20 claims
- 1193US10612964B1System to mitigate effects of vibration on load cellAMAZON TECH INC·Filed 2016·Granted Apr 7, 2020·8 cites·21 claims
- 1292US11057751B1User identification system using directional antennas and camerasAMAZON TECH INC·Filed 2019·Granted Jul 6, 2021·7 cites·20 claims
- 1391US6519275B2Communications system employing differential orthogonal modulationMOTOROLA INC·Filed 2001·Granted Feb 11, 2003·51 cites·16 claims
- 1490US7251222B2Procedures for merging the mediation device protocol with a network layer protocolMOTOROLA INC·Filed 2001·Granted Jul 31, 2007·74 cites·26 claims
- 1588US6922432B2System for spread spectrum communicationMOTOROLA INC·Filed 2001·Granted Jul 26, 2005·33 cites·38 claims
- 1687US6728306B1Method and apparatus for synchronizing a DS-CDMA receiverMOTOROLA INC·Filed 2000·Granted Apr 27, 2004·34 cites·52 claims
- 1786US9385763B1Method and apparatus for in-channel interference cancellationMOTOROLA SOLUTIONS INC·Filed 2015·Granted Jul 5, 2016·6 cites·4 claims
- 1883US7570927B2Decentralized wireless communication network and method having a plurality of devicesMOTOROLA INC·Filed 2006·Granted Aug 4, 2009·11 cites·26 claims
- 1982US10948339B1System to determine effects of vibration on weight data for a fixtureAMAZON TECH INC·Filed 2020·Granted Mar 16, 2021·1 cites·20 claims
- 2082US7548517B2Method and apparatus for determining the location of a node in a wireless systemMOTOROLA INC·Filed 2005·Granted Jun 16, 2009·10 cites·16 claims
- 2180US7209754B2Method and apparatus for determining the location of a node in a wireless title systemMOTOROLA INC·Filed 2005·Granted Apr 24, 2007·17 cites·15 claims
- 2279US7133373B2Wireless network with improved sharing of high power consumption tasksMOTOROLA INC·Filed 2003·Granted Nov 7, 2006·27 cites·23 claims
- 2378US7715352B2Method and apparatus for a node to determine a proper duty cycle within an ad-hoc networkMOTOROLA INC·Filed 2006·Granted May 11, 2010·8 cites·14 claims
- 2475US8837636B2Method and apparatus for out-of-channel emission suppressionSHI QICAI·Filed 2012·Granted Sep 16, 2014·4 cites·14 claims
- 2574US8140017B2Signal detection in cognitive radio systemsSHI QICAI·Filed 2008·Granted Mar 20, 2012·6 cites·20 claims
- 2674US7353031B2Method for estimating the location of a wireless device in a communication networkMOTOROLA INC·Filed 2005·Granted Apr 1, 2008·11 cites·13 claims
- 2774US7277401B2Reduced order model node location method for multi-hop networksMOTOROLA INC·Filed 2003·Granted Oct 2, 2007·18 cites·17 claims
- 2873US7016661B2Multi-mode receiver for frequency error mitigationMOTOROLA INC·Filed 2003·Granted Mar 21, 2006·13 cites·7 claims
- 2972US7570623B2Method and apparatus for operating a node in a beacon based ad hoc networkMOTOROLA INC·Filed 2006·Granted Aug 4, 2009·5 cites·17 claims
- 3072US6816493B2Method and apparatus employing a mediation device to facilitate communication among devices in an asynchronous communications networkMOTOROLA INC·Filed 2001·Granted Nov 9, 2004·18 cites·23 claims
- 3170US6876692B2System for code division multi-access communicationMOTOROLA INC·Filed 2001·Granted Apr 5, 2005·11 cites·24 claims
- 3269US7092726B2Method and system for determining a location using a plurality of selected initial location estimatesMOTOROLA INC·Filed 2003·Granted Aug 15, 2006·25 cites·24 claims
- 3369US6597915B2System and method for updating location information for distributed communication devicesMOTOROLA INC·Filed 2001·Granted Jul 22, 2003·14 cites·16 claims
- 3468US11340373B1System to determine portable device presence at a portalAMAZON TECH INC·Filed 2019·Granted May 24, 2022·0 cites·20 claims
- 3568US8428632B2Dynamic allocation of spectrum sensing resources in cognitive radio networksYE ZHUAN·Filed 2008·Granted Apr 23, 2013·5 cites·19 claims
- 3667US6563857B1Low cost DSSS communication systemMOTOROLA INC·Filed 2001·Granted May 13, 2003·8 cites·7 claims
- 3765US6996403B2Method and apparatus for locating a remote unitMOTOROLA INC·Filed 2004·Granted Feb 7, 2006·10 cites·19 claims
- 3863US7492773B2Media access control and distributed data processing using mediation devices in an asynchronous networkMOTOROLA INC·Filed 2003·Granted Feb 17, 2009·9 cites·39 claims
- 3960US7656804B2Method and apparatus for operating an AD-HOC communication systemMOTOROLA INC·Filed 2004·Granted Feb 2, 2010·7 cites·13 claims
- 4060US7242947B2Method and apparatus for determining the location of a unit using neighbor listsMOTOROLA INC·Filed 2003·Granted Jul 10, 2007·17 cites·27 claims
- 4154US7274940B2Method and system for determining a location of a plurality of units using sub-divided unit groupingsMOTOROLA INC·Filed 2003·Granted Sep 25, 2007·11 cites·21 claims
- 4253US11087274B1System to detect event at an inventory locationAMAZON TECH INC·Filed 2018·Granted Aug 10, 2021·0 cites·20 claims
- 4350US7436781B2Method and apparatus for determining the location of a node in a wireless systemMOTOROLA INC·Filed 2005·Granted Oct 14, 2008·1 cites·16 claims
- 4449US9386606B2Methods and systems for embedding supplementary data channel in LTE-based communication systemsMOTOROLA SOLUTIONS INC·Filed 2014·Granted Jul 5, 2016·0 cites·18 claims
- 4549US8467396B2Method of signal to time-spectrum channel resource mapping for wireless communication systemSHI QICAI·Filed 2009·Granted Jun 18, 2013·0 cites·14 claims
- 4647US8306561B2Targeted group scaling for enhanced distributed spectrum sensingKYPEROUNTAS SPYROS·Filed 2009·Granted Nov 6, 2012·0 cites·18 claims
- 4745US7440462B2Quality of service (QOS) control mechanisms using mediation devices in an asynchronous networkMOTOROLA INC·Filed 2003·Granted Oct 21, 2008·0 cites·42 claims
- 4845US7362724B2Method for rigid body discovery and peer-to-peer ranging in a scatternet and communications nodeMOTOROLA INC·Filed 2003·Granted Apr 22, 2008·5 cites·20 claims
- 4945US6985509B2Low cost DSSS communication systemMOTOROLA INC·Filed 2003·Granted Jan 10, 2006·0 cites·10 claims
- 5044US2002186750A1System for spread spectrum communicationFiled 2002·Application pending·0 cites
Showing the top 50 of 56 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →