Darrell L. Ash
18Patents
9h-index
4Co-inventors
65Inventor score
Filing activity: Jul 5, 1977 → Feb 13, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4162452A | Channel selection for a television receiver having low-gain high frequency RF-IF section | Electricity | 46 | Expired |
| US4408347A | High-frequency channel selector having fixed bandpass filters in the RF section | Electricity | 30 | Expired |
| US4663664A | Electronic ticket method and apparatus for television signal scrambling and descrambling | Emerging Cross-Sectional Technologies | 18 | Expired |
| US4749964A | Superregenerative detector having a saw device in the feedback circuit | Electricity | 17 | Expired |
| US4162451A | MESFET-device surface-wave-device channel selector | Electricity | 16 | Expired |
| US4682224A | System, method, and apparatus for television signal scrambling and descrambling | Electricity | 12 | Expired |
| US4761616A | Voltage controlled oscillator | Electricity | 11 | Expired |
| US4682223A | Descrambler unit method and apparatus for television signal descrambling | Electricity | 11 | Expired |
| US4760352A | Coupled resonator phase shift oscillator | Electricity | 9 | Expired |
| US5787117A | Receiver/transmitter having common elements | Electricity | 9 | Expired |
| US6914493B2 | Noise resistant low phase noise, frequency tracking oscillators and methods of operating the same | Electricity | 5 | Expired |
| US7199674B2 | Low phase noise, wide tune range saw oscillators and methods of operating the same | Electricity | 5 | Expired |
| US5789990A | Feedback oscillator circuit using a saw resonator filter | Electricity | 4 | Expired |
| US7260375B2 | Frequency agile RF circuit | Electricity | 4 | Expired |
| US5357206A | Sequential amplifier | Electricity | 3 | Expired |
| US5357207A | Sequential amplifier | Electricity | 2 | Expired |
| US6909334B2 | Low phase noise, wide tune range saw oscillators and methods of operating the same | Electricity | 2 | Expired |
| US8598924B2 | Frequency-locked synthesizer with low power consumption and related system and method | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.