Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7881362 | Method and apparatus for differentiated communication channel robustness in a multi-tone transceiver | Avadhani Shridhar, Sam Heidari, Rouben Toumani | 2011-02-01 |
| 6956823 | Apparatus and method for classifying terminating numbers | Louis Tsai | 2005-10-18 |
| 6504905 | System and method of testing voice signals in a telecommunication system | Louis Tsai | 2003-01-07 |
| 6405149 | System and method for testing a telecommunication system | Louis Tsai | 2002-06-11 |