Jeffrey J. Marrah
23Patents
8h-index
22Co-inventors
75Inventor score
Filing activity: Dec 15, 1988 → Jan 30, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6526268B1 | Mobile weather band radio and method | Electricity | 84 | Expired |
| US6728522B1 | Weather band radio and method of tuning same | Electricity | 34 | Expired |
| US4970474A | Analog/digital phase locked loop | Electricity | 22 | Expired |
| US7903629B2 | Hierarchically modulated OFDM communication from a satellite-based transmitter with reduced secondary data loss from clipping | Electricity | 14 | Active |
| US4972446A | Voltage controlled oscillator using dual modulus divider | Electricity | 13 | Expired |
| US5028893A | Switched capacitor filters with continuous time control | Electricity | 12 | Expired |
| US5261004A | Noise blanking circuit for AM stero | Electricity | 12 | Expired |
| US5014316A | Compatible quadrature amplitude modulation detector system | Electricity | 10 | Expired |
| US5991609A | Low cost digital automatic alignment method and apparatus | Electricity | 8 | Expired |
| US5937337A | Method and apparatus for reducing FM intrusion in AM receivers | Electricity | 8 | Expired |
| US4959859A | FM Channel separation adjustment | Electricity | 7 | Expired |
| US5028882A | Multiple output operational amplifier | Electricity | 6 | Expired |
| US7565126B2 | RF receiver system having switched antenna diversity module | Electricity | 5 | Active |
| US4975953A | Combined deemphasis circuit and noise blanker | Electricity | 5 | Expired |
| US4882548A | Low distortion current mirror | Electricity | 5 | Expired |
| US5151939A | Adaptive audio processor for AM stereo signals | Electricity | 4 | Expired |
| US4932058A | Pilot cancellation circuit | Electricity | 4 | Expired |
| US4947431A | Held music history circuit | Electricity | 3 | Expired |
| US6917794B2 | Phase compensation circuit | Electricity | 3 | Expired |
| US7668525B2 | System and method of a stereo receiving system | Electricity | 2 | Active |
| US4901350A | Closed-loop audio attenuator | Electricity | 1 | Expired |
| US7623594B2 | Satellite receiver system | Electricity | 1 | Active |
| US4933974A | Switched capacitor pilot phase and magnitude detector | Electricity | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.