Assignee
ITXC INC
US9 patents
Top patents by PatentIndex Score
US6212192B1Apr 3, 2001
Method and apparatus for synchronizing information browsing among multiple systems
ITXC INC230 citations97
US6310941B1Oct 30, 2001
Method and apparatus for facilitating tiered collaboration
ITXC INC222 citations96
US6304637B1Oct 16, 2001
Method and apparatus for establishing and facilitating a direct quality voice call to a telephone extension on behalf of a client computer
ITXC INC131 citations96
US6661878B1Dec 9, 2003
Method and apparatus for establishing a voice call to a PSTN extension for a networked client computer
ITXC INC62 citations95
US6628760B2Sep 30, 2003
Method and apparatus for selecting an internet/PSTN changeover server for a packet based phone call
ITXC INC39 citations95
US6298056B1Oct 2, 2001
Credit based telephony service facilitation
ITXC INC72 citations93
US6788674B1Sep 7, 2004
Method and apparatus for establishing a collect call originated through a packet based network
ITXC INC38 citations89
US6771640B2Aug 3, 2004
Virtual calling card with arbitrary controls
ITXC INC26 citations89
US6778652B2Aug 17, 2004
Method and apparatus for establishing and facilitating a voice call connection from a client computer to a PSTN extension
ITXC INC25 citations85