Inventor · disambiguated record
Chon Hei Lei
Also filed as: LEI CHON · LEI CHON H · LEI CHON HEI
28 granted patents·1 pending application·1,305 citations·filing 1998–2013
97Inventor score
Top patents by PatentIndex Score
29 records- 0197US7827403B2Method and apparatus for encrypting and decrypting data in a database tableORACLE INT CORP·Filed 2005·Granted Nov 2, 2010·77 cites·24 claims
- 0297US6578037B1Partitioned access control to a databaseORACLE CORP·Filed 2000·Granted Jun 10, 2003·191 cites·22 claims
- 0397US6487552B1Database fine-grained access controlORACLE CORP·Filed 1998·Granted Nov 26, 2002·306 cites·45 claims
- 0496US6631371B1Database fine-grained access controlORACLE INT CORP·Filed 2002·Granted Oct 7, 2003·108 cites·38 claims
- 0594US6587854B1Virtually partitioning user data in a database systemORACLE CORP·Filed 2001·Granted Jul 1, 2003·154 cites·30 claims
- 0692US7761704B2Method and apparatus for expiring encrypted dataORACLE INT CORP·Filed 2005·Granted Jul 20, 2010·34 cites·20 claims
- 0789US6745332B1Method and apparatus for enabling database privilegesORACLE INT CORP·Filed 1999·Granted Jun 1, 2004·134 cites·12 claims
- 0888US7639819B2Method and apparatus for using an external security device to secure data in a databaseORACLE INT CORP·Filed 2005·Granted Dec 29, 2009·20 cites·30 claims
- 0983US7440962B1Method and system for management of access informationORACLE INT CORP·Filed 2001·Granted Oct 21, 2008·33 cites·51 claims
- 1081US7117197B1Selectively auditing accesses to rows within a relational database at a database serverORACLE INT CORP·Filed 2000·Granted Oct 3, 2006·32 cites·27 claims
- 1180US7925023B2Method and apparatus for managing cryptographic keysORACLE INT CORP·Filed 2006·Granted Apr 12, 2011·9 cites·25 claims
- 1279US7228300B2Caching the results of security policy functionsORACLE INT CORP·Filed 2003·Granted Jun 5, 2007·26 cites·38 claims
- 1377US8549038B2Pluggable session contextNARASINGHANALLUR JANAKI·Filed 2009·Granted Oct 1, 2013·9 cites·48 claims
- 1477US8065329B2Query optimization on VPD protected columnsLEI CHON HEI·Filed 2007·Granted Nov 22, 2011·8 cites·24 claims
- 1576US7873660B1Enforcing data privacy aggregationsORACLE INT CORP·Filed 2003·Granted Jan 18, 2011·25 cites·14 claims
- 1676US6813617B2Dynamic generation of optimizer hintsORACLE INT CORP·Filed 2003·Granted Nov 2, 2004·32 cites·20 claims
- 1775US10540508B2Method and apparatus for securing a database configurationBYUN JI WON·Filed 2009·Granted Jan 21, 2020·9 cites·20 claims
- 1873US7281003B2Database fine-grained access controlORACLE INT CORP·Filed 2004·Granted Oct 9, 2007·17 cites·30 claims
- 1971US7310647B2Column masking of tablesORACLE INT CORP·Filed 2004·Granted Dec 18, 2007·19 cites·18 claims
- 2071US6516317B1Method and apparatus for facilitating compartmentalized database user managementORACLE CORP·Filed 2000·Granted Feb 4, 2003·17 cites·27 claims
- 2169US9495394B2Pluggable session contextORACLE INT CORP·Filed 2013·Granted Nov 15, 2016·2 cites·32 claims
- 2269US7503062B2Method and apparatus for enabling database privilegesORACLE INT CORP·Filed 2003·Granted Mar 10, 2009·12 cites·25 claims
- 2365US7228304B1Method and system for implementing an extensible audit trailORACLE INT CORP·Filed 2003·Granted Jun 5, 2007·20 cites·58 claims
- 2463US8667018B2Method and system for optimizing row level security in database systemsRAFIQ MOHAMMED IRFAN·Filed 2008·Granted Mar 4, 2014·3 cites·24 claims
- 2559US7185357B1Method and mechanism for implementing synonym-based access controlORACLE INT CORP·Filed 2002·Granted Feb 27, 2007·8 cites·34 claims
- 2650US9886481B2Query optimization on VPD protected columnsLEI CHON HEI·Filed 2011·Granted Feb 6, 2018·0 cites·18 claims
- 2743US2004139043A1Attribute relevant access control policiesORACLE INT CORP·Filed 2003·Application pending·0 cites
- 2842US10339336B2Method and apparatus for encrypting database columnsLEI CHON HEI·Filed 2003·Granted Jul 2, 2019·0 cites·27 claims
- 2937US7770006B2Method and apparatus for authorizing a database operationORACLE INT CORP·Filed 2005·Granted Aug 3, 2010·0 cites·18 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →