Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8693662 | Method and apparatus for providing ringback tones | Lisa Stifelman, Rao Surapaneni, Madhusudan Chinthakunta | 2014-04-08 |
| 8504621 | Facilitating a decision-making process | Joseph Adam Ruff, Robert P. Starling, Michael D. Trinkala, Karen M. Cross, Brandon William Porter | 2013-08-06 |
| 8019072 | Method and apparatus for providing ringback tones | Lisa Stifelman, Rao Surapaneni, Madhusudan Chinthakunta | 2011-09-13 |
| 7613287 | Method and apparatus for providing ringback tones | Lisa Stifelman, Rao Surapaneni, Madhusudan Chinthakunta | 2009-11-03 |
| 6904417 | Policy notice method and system | Kevin Robertson, Harry Carneal | 2005-06-07 |
| 5724047 | Phase and time-difference precision direction finding system | Rick J. Lioio, Robert Deaton | 1998-03-03 |