Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6850504 | Access to communications systems | Qiang Cao, Lorenz Fred Freiberg | 2005-02-01 |
| 6353598 | Asymmetric multiple access protocol for a communication system | Charlotte Baden, Qiang Cao, Lorenz Fred Freiberg | 2002-03-05 |
| 6292471 | Power control for mobile wireless communication system | Qiang Cao, Lorenz Fred Freiberg | 2001-09-18 |