Douglas E. Ehlers
4Patents
3h-index
11Co-inventors
47Inventor score
Filing activity: Aug 1, 1996 → Dec 18, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5710720A | Phase lock loop based system and method for decomposing and tracking decomposed frequency components of a signal, with application to vibration compensation system | Electricity | 15 | Expired |
| US5844938A | Carrier based data operated squelch | Electricity | 10 | Expired |
| US9558641B2 | System and method for monitoring a person | Physics | 10 | Active |
| US6256491A | Voice security between a composite channel telephone communications link and a telephone | Electricity | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.