Kelvin Leonard Cheung

Follow

Person

Sunnyvale, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
System and method for providing audio cues in operation of a VoIP s...
- Patent number 10,469,556
- Issue date Nov 5, 2019
- Ooma, Inc.
- Andrew Frame
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Distributed call routing in a VoIP system
- Patent number 9,319,531
- Issue date Apr 19, 2016
- Ooma, Inc.
- Simon Capper
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Distributed call routing in a VoIP system
- Patent number 8,804,697
- Issue date Aug 12, 2014
- Ooma, Inc.
- Simon Capper
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
System and method for providing audio cues in operation of a VoIP s...
- Publication number 20080298348
- Publication date Dec 4, 2008
- Andrew Frame
- H04 - ELECTRIC COMMUNICATION TECHNIQUE