Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5920609 | Metallic access test extension system architecture | Rouben Toumani, Brad T. Darnell, Marco Ruiz | 1999-07-06 |
| 5790062 | Delta modulator with pseudo constant modulation level | Brad T. Darnell, Rouben Toumani | 1998-08-04 |
| 5010544 | Fault location operating system with loopback | Ker-Chin Chang, Clarence E. Elkins, Paul A. Marshall, Duane E. Dunwoodie, Mohamed M. Mansour +1 more | 1991-04-23 |