Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8275559 | Fault detector for a tip and ring circuit, a method of protecting such a circuit and a power supply including the fault detector | Raymond Rene, Stephen C. Guthrie | 2012-09-25 |
| 7196919 | Neutral point controller, method of controlling and rectifier system employing the controller and the method | Minghua Fu, Joao Luiz Andres | 2007-03-27 |