Inventor · disambiguated record
Lei Chang
Also filed as: CHANG LEI · CHANG LEI-CHIH
54 granted patents·9 pending applications·224 citations·filing 2011–2025
98Inventor score
Files withEMC IP HOLDING CO LLC17PALO ALTO NETWORKS INC13AURADINE INC9EMC CORP7DELTA ELECTRONICS SHANGHAI CO4
Top patents by PatentIndex Score
63 records- 0198US9171042B1Parallel processing database tree structureEMC CORP·Filed 2013·Granted Oct 27, 2015·45 cites·19 claims
- 0296US11177682B2Single-phase and three-phase compatible circuit and charge-discharge apparatusDELTA ELECTRONICS SHANGHAI CO·Filed 2020·Granted Nov 16, 2021·6 cites·20 claims
- 0396US9626411B1Self-described query execution in a massively parallel SQL execution engineEMC CORP·Filed 2013·Granted Apr 18, 2017·23 cites·24 claims
- 0495US11252084B1Enhanced SD-WAN path quality measurement and selectionPALO ALTO NETWORKS INC·Filed 2020·Granted Feb 15, 2022·34 cites·23 claims
- 0594US10110563B1Reduction and acceleration of a deterministic finite automatonPALO ALTO NETWORKS INC·Filed 2016·Granted Oct 23, 2018·16 cites·15 claims
- 0693US11882216B1End-to-end hardware acceleration for ZKP from witness generation to proof generationAURADINE INC·Filed 2023·Granted Jan 23, 2024·3 cites·18 claims
- 0792US11323486B2Security for cellular internet of things in mobile networks based on subscriber identity and applicationPALO ALTO NETWORKS INC·Filed 2020·Granted May 3, 2022·3 cites·22 claims
- 0892US10769146B1Data locality based query optimization for scan operatorsEMC IP HOLDING CO LLC·Filed 2013·Granted Sep 8, 2020·9 cites·24 claims
- 0991US10708306B2Mobile user identity and/or SIM-based IoT identity and application identity based security enforcement in service provider networksPALO ALTO NETWORKS INC·Filed 2017·Granted Jul 7, 2020·5 cites·28 claims
- 1091US9805092B1Parallel processing database systemEMC IP HOLDING CO LLC·Filed 2013·Granted Oct 31, 2017·6 cites·27 claims
- 1191US9454573B1Parallel processing database system with a shared metadata storeEMC CORP·Filed 2013·Granted Sep 27, 2016·6 cites·22 claims
- 1290US11797295B1Separate firmware to fixed and removable storagesAURADINE INC·Filed 2023·Granted Oct 24, 2023·1 cites·15 claims
- 1390US10812532B2Security for cellular internet of things in mobile networksPALO ALTO NETWORKS INC·Filed 2018·Granted Oct 20, 2020·6 cites·28 claims
- 1490US9792327B2Self-described query execution in a massively parallel SQL execution engineEMC IP HOLDING CO LLC·Filed 2017·Granted Oct 17, 2017·3 cites·17 claims
- 1590US9594803B2Parallel processing database tree structureEMC IP HOLDING CO LLC·Filed 2015·Granted Mar 14, 2017·3 cites·27 claims
- 1689US11916967B2Mobile user identity and/or sim-based IoT identity and application identity based security enforcement in service provider networksPALO ALTO NETWORKS INC·Filed 2022·Granted Feb 27, 2024·1 cites·20 claims
- 1789US10572479B2Parallel processing database systemEMC IP HOLDING CO LLC·Filed 2017·Granted Feb 25, 2020·2 cites·20 claims
- 1888US11736390B2Enhanced SD-WAN path quality measurement and selectionPALO ALTO NETWORKS INC·Filed 2021·Granted Aug 22, 2023·2 cites·20 claims
- 1988US11362998B2Reduction and acceleration of a deterministic finite automatonPALO ALTO NETWORKS INC·Filed 2020·Granted Jun 14, 2022·2 cites·20 claims
- 2088US11076138B2Projection system, projection apparatus and calibrating method for displayed image thereofCORETRONIC CORP·Filed 2020·Granted Jul 27, 2021·3 cites·20 claims
- 2187US12101407B1Automated pool configuration provisioningAURADINE INC·Filed 2023·Granted Sep 24, 2024·2 cites·16 claims
- 2287US11457044B2Mobile user identity and/or sim-based IoT identity and application identity based security enforcement in service provider networksPALO ALTO NETWORKS INC·Filed 2020·Granted Sep 27, 2022·2 cites·20 claims
- 2387US9888048B1Supporting millions of parallel light weight data streams in a distributed systemEMC CORP·Filed 2013·Granted Feb 6, 2018·4 cites·21 claims
- 2486US10742609B2Reduction and acceleration of a deterministic finite automatonPALO ALTO NETWORKS INC·Filed 2018·Granted Aug 11, 2020·3 cites·20 claims
- 2584US12355819B2Mobile user identity and/or sim-based IoT identity and application identity based security enforcement in service provider networksPALO ALTO NETWORKS INC·Filed 2024·Granted Jul 8, 2025·0 cites·19 claims
- 2683US11436224B2Parallel processing database system with a shared metadata storeEMC IP HOLDING CO LLC·Filed 2018·Granted Sep 6, 2022·1 cites·15 claims
- 2783US9178834B1Interconnect flow controlEMC CORP·Filed 2013·Granted Nov 3, 2015·6 cites·22 claims
- 2882US11942872B2Multi-PATH resonant circuit and resonant converterGUANGDONG SOFAR SMART SOLAR TECH CO LTD·Filed 2023·Granted Mar 26, 2024·1 cites·16 claims
- 2982US10120900B1Processing a database query using a shared metadata storeEMC IP HOLDING CO LLC·Filed 2013·Granted Nov 6, 2018·2 cites·28 claims
- 3082US10013456B2Parallel processing database system with a shared metadata storeEMC IP HOLDING CO LLC·Filed 2016·Granted Jul 3, 2018·1 cites·24 claims
- 3182US2024071674A1Magnetic component and power moduleDELTA ELECTRONICS SHANGHAI CO·Filed 2023·Application pending·0 cites
- 3281US9582520B1Transaction model for data stores using distributed file systemsEMC IP HOLDING CO LLC·Filed 2013·Granted Feb 28, 2017·2 cites·25 claims
- 3381US8875222B1Efficient XACML access control processingCHANG LEI·Filed 2011·Granted Oct 28, 2014·14 cites·20 claims
- 3480US12217048B1Separate firmware to fixed and removable storagesAURADINE INC·Filed 2024·Granted Feb 4, 2025·0 cites·21 claims
- 3579US11626806B2Bidirectional isolated resonant converter with integrated resonant inductor and isolated transformerDELTA ELECTRONICS SHANGHAI CO·Filed 2020·Granted Apr 11, 2023·2 cites·13 claims
- 3678US12026505B1Separate firmware to fixed and removable storagesAURADINE INC·Filed 2023·Granted Jul 2, 2024·0 cites·21 claims
- 3777US11880223B1Separate firmware to fixed and removable storagesAURADINE INC·Filed 2023·Granted Jan 23, 2024·0 cites·15 claims
- 3877US11288267B2Pluggable storage system for distributed file systemsEMC IP HOLDING CO LLC·Filed 2019·Granted Mar 29, 2022·0 cites·21 claims
- 3975US12113896B1End-to-end hardware acceleration for ZKP from witness generation to proof generationAURADINE INC·Filed 2023·Granted Oct 8, 2024·0 cites·21 claims
- 4075US11281669B2Parallel processing database systemEMC IP HOLDING CO LLC·Filed 2020·Granted Mar 22, 2022·0 cites·19 claims
- 4175US11088538B2Module of suppressing inrush current, method of controlling the same and on-board bidirectional charger using the sameDELTA ELECTRONICS INC·Filed 2019·Granted Aug 10, 2021·2 cites·14 claims
- 4274US11120022B2Processing a database query using a shared metadata storeEMC IP HOLDING CO LLC·Filed 2018·Granted Sep 14, 2021·0 cites·18 claims
- 4373US2025360414A1Virtual object interaction method and apparatus, device, medium, and program productTENCENT TECH SHENZHEN CO LTD·Filed 2025·Application pending·0 cites
- 4471US11968178B2Reduction and acceleration of a deterministic finite automatonPALO ALTO NETWORKS INC·Filed 2022·Granted Apr 23, 2024·0 cites·8 claims
- 4571US11848128B2Magnetic component and power moduleDELTA ELECTRONICS SHANGHAI CO·Filed 2020·Granted Dec 19, 2023·0 cites·6 claims
- 4671US10936588B2Self-described query execution in a massively parallel SQL execution engineEMC IP HOLDING CO LLC·Filed 2017·Granted Mar 2, 2021·0 cites·20 claims
- 4771US10698891B2MxN dispatching in large scale distributed systemEMC IP HOLDING CO LLC·Filed 2017·Granted Jun 30, 2020·0 cites·20 claims
- 4871US2024411900A1End-to-end hardware acceleration for zkp from witness generation to proof generationAURADINE INC·Filed 2023·Application pending·0 cites
- 4969US10459917B2Pluggable storage system for distributed file systemsEMC IP HOLDING CO LLC·Filed 2016·Granted Oct 29, 2019·0 cites·20 claims
- 5068US11722532B2Security for cellular internet of things in mobile networks based on subscriber identity and application identifierPALO ALTO NETWORKS INC·Filed 2022·Granted Aug 8, 2023·0 cites·20 claims
Showing the top 50 of 63 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →