Michael Armstrong
5Patents
4h-index
9Co-inventors
50Inventor score
Filing activity: Oct 1, 1992 → Mar 11, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5339352A | Directory assistance call completion via mobile systems | Electricity | 141 | Expired |
| US5892820A | Directory assistance access to intercept telephone numbers | Electricity | 40 | Expired |
| US8401154B2 | Emergency text communications | Electricity | 21 | Active |
| US6816584B1 | Routing a call through a telecommunications network | Electricity | 7 | Expired |
| US9094535B2 | Emergency text communications | Electricity | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.