Patents Assigned to Ringfree International Corporation - Justia Patents Search

Patents Assigned to Ringfree International Corporation

Method and device for generating voice/text/image commercial information ringback tone during communication wait

Patent number: 7224788

Abstract: Voice/text/image commercial information generating method and device during a communication is on wait.

Type: Grant

Filed: November 17, 1999

Date of Patent: May 29, 2007

Assignee: Ringfree International Corporation

Inventors: Hyoung Chan Rhee, Jong Su Hong