Inventor · disambiguated record
Leah Zhang
Also filed as: ZHANG LEAH · ZHANG LEAH L · ZHANG LEAH LI
26 granted patents·1 pending application·360 citations·filing 2000–2019
96Inventor score
Top patents by PatentIndex Score
27 records- 0194US6724722B1Managing congestion and potential traffic growth in an information networkLUCENT TECHNOLOGIES INC·Filed 2000·Granted Apr 20, 2004·117 cites·26 claims
- 0293US6728782B1Method of verifying newly provisioned customer network route advertisementsAT & T CORP·Filed 2000·Granted Apr 27, 2004·82 cites·16 claims
- 0385US7596313B1Method and apparatus for processing protection switching mechanism in optical channel shared protection ringsMERITON NETWORKS US INC·Filed 2007·Granted Sep 29, 2009·10 cites·16 claims
- 0484US7269346B1Optical automatic protection switching mechanism for optical channel shared protection ringsMERITON NETWORKS US INC·Filed 2002·Granted Sep 11, 2007·25 cites·5 claims
- 0579US9798810B2Methods and apparatus to track changes to a network topologyAT & T IP I LP·Filed 2014·Granted Oct 24, 2017·4 cites·16 claims
- 0679US7277631B1Method and apparatus for processing protection switching mechanism in optical channel shared protection ringsMERITON NETWORKS US INC·Filed 2002·Granted Oct 2, 2007·17 cites·8 claims
- 0777US7664043B1Method and apparatus for performing reachability testing within the context of customer virtual private networksAT & T CORP·Filed 2004·Granted Feb 16, 2010·22 cites·4 claims
- 0877US7065044B2Managing congestion and traffic flow by considering the minimization of link utilization valuesLUCENT TECHNOLOGIES INC·Filed 2004·Granted Jun 20, 2006·21 cites·26 claims
- 0974US7774500B1Method and apparatus for flexible network management of multiple customer virtual private networksAT & T IP II LP·Filed 2004·Granted Aug 10, 2010·16 cites·17 claims
- 1072US10210258B2Methods and apparatus to track changes to a network topologyAT & T IP I LP·Filed 2017·Granted Feb 19, 2019·1 cites·18 claims
- 1172US8161194B2Method and apparatus for flexible network management of multiple customer virtual private networksD SOUZA KEVIN·Filed 2010·Granted Apr 17, 2012·3 cites·20 claims
- 1272US7715713B1Method and apparatus for providing multiple optical channel protection switching mechanisms in optical ringsMERITON NETWORKS US INC·Filed 2003·Granted May 11, 2010·11 cites·19 claims
- 1371US8908505B2Methods, apparatus and articles of manufacture to monitor communication paths in communication systemsAT & T IP I LP·Filed 2013·Granted Dec 9, 2014·2 cites·11 claims
- 1470US7609626B2Nodes for managing congestion and traffic flow by considering the minimization of link utilization valuesALCATEL LUCENT USA INC·Filed 2006·Granted Oct 27, 2009·4 cites·13 claims
- 1569US7181533B2Method for verifying newly provisioned customer network route advertisementsAT & T CORP·Filed 2004·Granted Feb 20, 2007·9 cites·19 claims
- 1668US7565449B2Method for verifying newly provisioned customer network route advertisementsAT & T CORP·Filed 2007·Granted Jul 21, 2009·2 cites·16 claims
- 1766US7995491B1MPLS VPN connectivity alarm storm reductionAT & T IP II LP·Filed 2006·Granted Aug 9, 2011·4 cites·12 claims
- 1864US8705374B1Method and apparatus for isolating label-switched path impairmentsD SOUZA KEVIN·Filed 2006·Granted Apr 22, 2014·5 cites·8 claims
- 1961US10733245B2Methods and apparatus to track changes to a network topologyAT & T IP I LP·Filed 2019·Granted Aug 4, 2020·0 cites·14 claims
- 2060US8498203B2Methods, apparatus and articles of manufacture to monitor communication paths in communication systemsXU ZHIJIAN·Filed 2012·Granted Jul 30, 2013·1 cites·11 claims
- 2159US8630189B2Methods, apparatus and articles of manufacture to monitor tunnels within traffic engineering/fast reroute enabled networksWANG HENG·Filed 2009·Granted Jan 14, 2014·2 cites·20 claims
- 2259US7881210B2Method and apparatus for identifying label distribution protocol flapping eventsAT & T IP I LP·Filed 2008·Granted Feb 1, 2011·1 cites·17 claims
- 2357US8279771B2Methods, apparatus and articles of manufacture to monitor communication paths in communication systemsXU ZHIJIAN·Filed 2009·Granted Oct 2, 2012·1 cites·18 claims
- 2450US10572322B2Network control plane design toolAT & T IP I LP·Filed 2017·Granted Feb 25, 2020·0 cites·20 claims
- 2548US8102780B2Method and apparatus for performing reachability testing within the context of customer virtual private networksD SOUZA KEVIN L·Filed 2009·Granted Jan 24, 2012·0 cites·15 claims
- 2645US10511544B2Path computation element protocol response and simple network management protocol confirmation for tunnel configurationAT & T IP I LP·Filed 2016·Granted Dec 17, 2019·0 cites·20 claims
- 2739US2002054405A1Extensions to resource reservation protocol (RSVP) -traffic engineering (TE) for bi-directional optical path setupFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →