Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Method for porting a directory number from one wireless service provider to another

Method for porting a directory number from one wireless service provider to another

US Patent 6138023 · Granted Oct 24, 2000

Estimated economic value: $31,762,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Apparatus, system and method of Visible Light Communication (VLC)2025
Method of handling mobile station identifiers2016
Method to amplify nucleic acids to generate fluorescence labeled fragments of co2015
Voice group sessions over telecommunication networks2013
IMS network providing purchasing sessions to mobile devices that are located pro2012
Method and apparatus for emergency call routing using an end node2012
Method for transferring data2011
Method and apparatus for overload control and audit in a resource control and ma2011
Method of providing a unique call back number for wireless 9-1-1 calls2010
Method of updating a unique call back number for a wireless emergency call2010
System and method for managing communication services provided to a mobile termi2010
Method of associating data with a call to a call center2010