Charles E. Copeland
4Patents
3h-index
2Co-inventors
36Inventor score
Filing activity: Nov 21, 1997 → Jun 3, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6377668B1 | Internet priority call device | Electricity | 50 | Expired |
| US6233330A | Telephone call screening device with power and telephone line failure alert, call answering, call routing, and caller ID | Electricity | 25 | Expired |
| US6195423A | Two line voice/data switch | Electricity | 5 | Expired |
| US7184537B2 | Apparatus and method for CNG detection with call waiting | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.