Inventor

TANG HWAN

US5 patents

⚠️ This page may combine multiple inventors who share the name “TANG HWAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

IBASIS INC

3 patents

US7577131B2Aug 18, 2009

System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet

IBASIS INC74 citations95

US7529225B2May 5, 2009

System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet

IBASIS INC15 citations89

US8351421B2Jan 8, 2013

System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet

IBASIS INC0 citations49

JOSEPH AJAY

1 patent

US8248957B2Aug 21, 2012

System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet

JOSEPH AJAY0 citations42

YURCHENKO VITALIY

1 patent

US9444738B2Sep 13, 2016

System and method for monitoring the volume of calls carried by a voice over internet protocol telephone system

YURCHENKO VITALIY0 citations27