Barbara Derryberry
8Patents
6h-index
2Co-inventors
49Inventor score
Filing activity: Dec 21, 2001 → Apr 17, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7170863B1 | Push-to-talk wireless telecommunications system utilizing a voice-over-IP network | Electricity | 204 | Expired |
| US7801953B1 | Push-to-talk wireless telecommunications system utilizing an voice-over-IP network | Electricity | 81 | Active |
| US7826603B1 | Push-to-talk wireless telecommunications system utilizing a voice-over-IP network | Electricity | 48 | Active |
| US8694041B2 | Push-to-talk telecommunications system utilizing an voice-over-IP network | Electricity | 7 | Active |
| US8447341B2 | Push-to-talk telecommunications system utilizing a voice-over-IP network | Electricity | 7 | Active |
| US8428237B1 | Push-to-talk wireless telecommunications system utilizing a voice-over-IP network | Electricity | 6 | Active |
| US9014742B2 | Push-to-talk telecommunications system utilizing an voice-over-IP network | Electricity | 1 | Active |
| US9723458B2 | Push-to-talk telecommunications system utilizing an voice-over-IP network | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.