Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5802153 | Apparatus and method for interfacing between a communications channel and a processor for data transmission and reception | Manickam R. Sridhar, Minh Hoang, John Wortman | 1998-09-01 |
| 5787116 | Apparatus and method for detecting amplitude modulated answer back toned signals | Thanh Lam, Richard Haltmaier | 1998-07-28 |
| 5483593 | Call progress decoder for multiple cadenced tones on telephone lines | Sanjay Gupta | 1996-01-09 |