Inventor · disambiguated record
Qifan Chen
Also filed as: CHEN QIFAN
26 granted patents·13 pending applications·213 citations·filing 2007–2025
95Inventor score
Files withQUALCOMM INC17CHEN QIFAN7AL-OMARI AWNY K6HEWLETT PACKARD DEVELOPMENT CO3HEWLETT PACKARD ENTPR DEV LP3
Top patents by PatentIndex Score
39 records- 0197US8286048B1Dynamically scaled LLR for an LDPC decoderCHEN QIFAN·Filed 2008·Granted Oct 9, 2012·58 cites·20 claims
- 0297US8233457B1Synchronization-free station locator in wireless networkCHEN QIFAN·Filed 2009·Granted Jul 31, 2012·44 cites·20 claims
- 0395US11711184B2Long training field (LTF) in distributed transmissionQUALCOMM INC·Filed 2021·Granted Jul 25, 2023·3 cites·30 claims
- 0492US8543883B2Decoding low-density parity check (LDPC) codewordsCHEN QIFAN·Filed 2012·Granted Sep 24, 2013·14 cites·18 claims
- 0590US12184568B2Pilot tones in distributed resource unit (DRU) transmissionQUALCOMM INC·Filed 2023·Granted Dec 31, 2024·1 cites·24 claims
- 0689US8565133B2Synchronization-free station locator in wireless networkCHEN QIFAN·Filed 2012·Granted Oct 22, 2013·7 cites·39 claims
- 0789US8190962B1System and method for dynamic maximal iterationCHEN QIFAN·Filed 2008·Granted May 29, 2012·31 cites·20 claims
- 0886US11838227B2Pilot tones in distributed resource unit (dRU) transmissionQUALCOMM INC·Filed 2021·Granted Dec 5, 2023·1 cites·24 claims
- 0986US8224806B2Selectivity-based optimized-query-plan cachingAL-OMARI AWNY K·Filed 2009·Granted Jul 17, 2012·20 cites·16 claims
- 1085US12368548B2Long training field (LTF) in distributed transmissionQUALCOMM INC·Filed 2024·Granted Jul 22, 2025·0 cites·20 claims
- 1185US2025373378A1Long training field (ltf) in distributed transmissionQUALCOMM INC·Filed 2025·Application pending·0 cites
- 1282US12388593B2Distributed transmission of short training fieldsQUALCOMM INC·Filed 2024·Granted Aug 12, 2025·0 cites·30 claims
- 1382US9429642B1Radar detection for adjacent segments in wireless communicationsQUALCOMM INC·Filed 2015·Granted Aug 30, 2016·6 cites·22 claims
- 1481US12058064B2Long training field (LTF) in distributed transmissionQUALCOMM INC·Filed 2023·Granted Aug 6, 2024·0 cites·30 claims
- 1581USD966009SStorage rackCHEN QIFAN·Filed 2021·Granted Oct 11, 2022·7 cites·1 claims
- 1679US8787191B2Method and apparatus for determining distance in a Wi-Fi networkCHEN QIFAN·Filed 2011·Granted Jul 22, 2014·6 cites·19 claims
- 1778US9143967B2Method and apparatus for determining distance in a Wi-Fi networkQUALCOMM INC·Filed 2014·Granted Sep 22, 2015·3 cites·30 claims
- 1876US2025125919A1Pilot tones in distributed resource unit (dru) transmissionQUALCOMM INC·Filed 2024·Application pending·0 cites
- 1973US10452676B2Managing database with counting bloom filtersHEWLETT PACKARD ENTPR DEV LP·Filed 2014·Granted Oct 22, 2019·3 cites·15 claims
- 2072US12052192B2Distributed transmission of short training fieldsQUALCOMM INC·Filed 2021·Granted Jul 30, 2024·0 cites·30 claims
- 2171US8799272B2Data skew insensitive parallel join schemeAL-OMARI AWNY K·Filed 2007·Granted Aug 5, 2014·5 cites·15 claims
- 2267US9465826B2Estimating unique entry counts using a counting bloom filterHEWLETT PACKARD DEVELOPMENT CO LP·Filed 2012·Granted Oct 11, 2016·2 cites·16 claims
- 2365US2025141641A1Global cyclic shift delays for distributed transmissionsQUALCOMM INC·Filed 2025·Application pending·0 cites
- 2462US12218884B2Global cyclic shift delays for distributed transmissionsQUALCOMM INC·Filed 2021·Granted Feb 4, 2025·0 cites·18 claims
- 2562US8812484B2System and method for outer joins on a parallel database management systemAL-OMARI AWNY K·Filed 2010·Granted Aug 19, 2014·1 cites·20 claims
- 2661US10430411B2Incrementally updating statisticsHEWLETT PACKARD DEVELOPMENT CO·Filed 2013·Granted Oct 1, 2019·1 cites·15 claims
- 2761US2024351027A1Imaging device for ami diagnosisUNIV WENZHOU·Filed 2024·Application pending·0 cites
- 2856US2025323774A1Transmission of resource units by narrow bandwidth operating devices in wide bandwidth spectrumQUALCOMM INC·Filed 2024·Application pending·0 cites
- 2956US2025096932A1Longer low-density parity check (ldpc) code signaling in ultra high reliability (uhr) systemsQUALCOMM INC·Filed 2024·Application pending·0 cites
- 3055US2024365320A1Distributed transmission across 80mhzQUALCOMM INC·Filed 2023·Application pending·0 cites
- 3155US2025125934A1Reducing out-of-band emission for transmissions associated with a distributed resource unit allocationQUALCOMM INC·Filed 2024·Application pending·0 cites
- 3249US9348869B2Data skew insensitive parallel join schemeAL-OMARI AWNY K·Filed 2012·Granted May 24, 2016·0 cites·18 claims
- 3347US2017024433A1Query plan post optimization analysis and reoptimizationHEWLETT PACKARD ENTPR DEV LP·Filed 2014·Application pending·0 cites
- 3443US2014330768A1Incrementally updated sample tablesHEWLETT PACKARD DEVELOPMENT CO·Filed 2013·Application pending·0 cites
- 3541US10922314B2Incrementally updating a database statisticHEWLETT PACKARD ENTPR DEV LP·Filed 2015·Granted Feb 16, 2021·0 cites·15 claims
- 3639US2013232133A1Systems and methods for performing a nested join operationAL-OMARI AWNY K·Filed 2010·Application pending·0 cites
- 3739US2013010617A1Relative position determination of wireless network devicesQUALCOMM ATHERONS INC·Filed 2011·Application pending·0 cites
- 3838US2012179669A1Systems and methods for searching a search space of a queryAL-OMARI AWNY K·Filed 2011·Application pending·0 cites
- 3936US9922080B2Query plan determinationHEWLETT PACKARD DEVELOPMENT CO·Filed 2015·Granted Mar 20, 2018·0 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →