Richard D. Ray
4Patents
4h-index
5Co-inventors
36Inventor score
Filing activity: Dec 3, 1993 → Apr 4, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6259444A | User-definable interactive system | Electricity | 42 | Expired |
| US5515423A | Two-line telephone controller | Electricity | 22 | Expired |
| US5802150A | Communication control board with audio functions | Electricity | 16 | Expired |
| US5960065A | Two-line telephone controller with hold feature | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.