Inventor · disambiguated record
Yunzhou Li
Also filed as: LI YUNZHOU
24 granted patents·2 pending applications·1,223 citations·filing 1999–2024
97Inventor score
Files withNORTEL NETWORKS LTD18AVAYA INC1HASCO VISION TECH CO LTD1HUAWEI TECH CO LTD1INST OCEANOGRAPHIC INSTR SHANDONG ACADEMY OF SCIENCES1
Top patents by PatentIndex Score
26 records- 0191US6597703B1System, device, and method for reducing multicast forwarding states in a multicast communication systemNORTEL NETWORKS LTD·Filed 1999·Granted Jul 22, 2003·276 cites·97 claims
- 0285US6975587B1Mechanism for automatic protection switching in a routerNORTEL NETWORKS LTD·Filed 2000·Granted Dec 13, 2005·72 cites·9 claims
- 0384US6606706B1Hierarchical multicast traffic security system in an internetworkNORTEL NETWORKS LTD·Filed 1999·Granted Aug 12, 2003·149 cites·5 claims
- 0482US6751220B1Apparatus and method of managing virtual private network routing dataNORTEL NETWORKS LTD·Filed 2000·Granted Jun 15, 2004·34 cites·49 claims
- 0580US6751747B2System, device, and method for detecting and recovering from failures in a multicast communication systemNORTEL NETWORKS LTD·Filed 2000·Granted Jun 15, 2004·29 cites·56 claims
- 0679US7444422B1Multicast when forwarding information is unknownNORTEL NETWORKS LTD·Filed 2000·Granted Oct 28, 2008·28 cites·36 claims
- 0779US7233567B1Apparatus and method for supporting multiple traffic redundancy mechanismsNORTEL NETWORKS LTD·Filed 2000·Granted Jun 19, 2007·29 cites·44 claims
- 0876US10827401B2Cell handover method, apparatus, and systemHUAWEI TECH CO LTD·Filed 2019·Granted Nov 3, 2020·2 cites·16 claims
- 0975US7881477B2Method for key distribution in a hierarchical multicast traffic security system for an internetworkAVAYA INC·Filed 2006·Granted Feb 1, 2011·6 cites·11 claims
- 1075US6711172B1Network packet routingNORTEL NETWORKS CORP·Filed 1999·Granted Mar 23, 2004·84 cites·19 claims
- 1173US6636895B1System, device, and method for distributing multicast routing information in a protocol independent multicast networkNORTEL NETWORKS LTD·Filed 1999·Granted Oct 21, 2003·83 cites·22 claims
- 1272US6707796B1System device and method for reducing forwarding states in a communication systemNORTEL NETWORKS LTD·Filed 1999·Granted Mar 16, 2004·74 cites·86 claims
- 1368US6917983B1Reverse path forwarding using a multicast routing tableNORTEL NETWORKS LTD·Filed 1999·Granted Jul 12, 2005·62 cites·17 claims
- 1465US6631420B1Reducing convergence time by a protocol independent multicast (PIM) routerNORTEL NETWORKS LTD·Filed 1999·Granted Oct 7, 2003·53 cites·40 claims
- 1564US7184396B1System, device, and method for bridging network trafficNORTEL NETWORKS LTD·Filed 2000·Granted Feb 27, 2007·9 cites·33 claims
- 1662US6791980B1System, device, and method for reducing the number of multicast routes maintained in a multicast routing information baseNORTEL NETWORKS LTD·Filed 1999·Granted Sep 14, 2004·45 cites·45 claims
- 1760US6526054B1System, device, and method for transitioning from DVMRP to BGMP for interdomain multicast routing over the internet multicast backboneNORTEL NETWORKS LTD·Filed 1999·Granted Feb 25, 2003·44 cites·58 claims
- 1855US6718382B1Technique for detecting leaky points within a network protocol domainFiled 1999·Granted Apr 6, 2004·36 cites·56 claims
- 1954US6795433B1Multicast routing cacheNORTEL NETWORKS LTD·Filed 1999·Granted Sep 21, 2004·30 cites·20 claims
- 2054US6594703B1Apparatus and method of minimizing internal multicast trafficFiled 1999·Granted Jul 15, 2003·30 cites·45 claims
- 2153US2025074551A1High-stability deep-sea buoy platform and an oscillation control method thereofINST OCEANOGRAPHIC INSTR SHANDONG ACADEMY OF SCIENCES·Filed 2024·Application pending·0 cites
- 2252US7269728B1Apparatus and method for distributing management keys in a multicast domainNORTEL NETWORKS LTD·Filed 1999·Granted Sep 11, 2007·28 cites·92 claims
- 2345US10596952B2Intelligent lighting system for automobile lamp, automobile lamp assembly and automobileHASCO VISION TECH CO LTD·Filed 2018·Granted Mar 24, 2020·0 cites·8 claims
- 2443US6928075B2Method and apparatus for aggregating multicast interfacesNORTEL NETWORKS LTD·Filed 2000·Granted Aug 9, 2005·0 cites·91 claims
- 2542US7127610B1Apparatus and method of implementing multicast security between multicast domainsNORTEL NETWORKS LTD·Filed 1999·Granted Oct 24, 2006·20 cites·44 claims
- 2642US2022331932A1A polishing fixture and a polishing systemNICROTEK CO LTD·Filed 2019·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →