Telchemy has a number of granted patents and pending patent applications related to our technology. We do enforce these patents and license them either as patents or in conjunction with the licensing of our software. If your company would like to license any of Telchemy's patents, please contact us.

Granted Patents

Patent Number	Priority Date	Title	Description
US 6,741,569 EP1277331	4/18/1999	Quality of service monitor for multimedia communications system	A subjective quality monitoring system for packet-based multimedia signal transmission systems.
US 7,075,981 EP1287708	5/19/1999	Dynamic quality of service monitor	A subjective quality monitoring system for multimedia signal transmission systems or distributed applications software systems.
US 7,058,048	5/19/1999	Per-call quality of service monitor for multimedia communications system	A subjective quality monitoring system for packet-based multimedia signal transmission systems.
US 7,808,915 CA 2522892 EP1614018	4/14/2003	System for identifying and locating network problems	A network monitoring system for packet-based multimedia signal transmission systems.
US 7,710,879 EP1825621	12/19/2004	System and method for improving the quality of real time multimedia sessions	A system and method for improving the quality of real-time multimedia sessions.
US 7,684,324 WO2006069219	12/20/2004	System and method for prioritizing individual streams within a multimedia flow	A system and method for prioritizing delay-sensitive packets relative to each other for transmission from a router in a network.
US 7,869,377	6/26/2005	Method for estimating a subjective quality of a signal	A method for estimating a subjective quality of a signal carried over a transmission path that is monitored at periodic intervals.
US 7,848,243	1/23/2007	Method and system for estimating modem and fax performance over packet networks	A system and method for providing service quality metrics related to the quality of service provided by a Voice over Internet Protocol ("VoIP") network to voiceband modems or fax machines communicating over the VoIP network.