Inventor · disambiguated record

Kwan Shum

Also filed as: SHUM KWAN

2 granted patents·36 citations·filing 2005–2005

58Inventor score

Technology areasH04L

Files withHK APPLIED SCIENCE & TECH RES2

Top patents by PatentIndex Score

2 records

0187US7920548B2Intelligent switching for secure and reliable voice-over-IP PBX serviceHK APPLIED SCIENCE & TECH RES·Filed 2005·Granted Apr 5, 2011·34 cites·20 claims
0255US7836488B2Authentic device admission scheme for a secure communication network, especially a secure IP telephony networkHK APPLIED SCIENCE & TECH RES·Filed 2005·Granted Nov 16, 2010·2 cites·13 claims

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