Du-Tuan Lam

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San Jose, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Private branch exchange built using an ATM Network
- Patent number 6,885,661
- Issue date Apr 26, 2005
- Nortel Networks Limited
- David Ian Hopper
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Using an ATM switch to grow the capacity of a switching stage
- Patent number 6,768,736
- Issue date Jul 27, 2004
- Nortel Networks Limited
- Ranvir Chitkara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Telecommunications switch apparatus and method for time switching
- Patent number 5,841,771
- Issue date Nov 24, 1998
- Northern Telecom Limited
- George Frank Irwin
- H04 - ELECTRIC COMMUNICATION TECHNIQUE