Darrell L. Ash has been granted 16 US patents while listed as an inventor at Rf Monolithics . The first was granted in 1983 and the most recent in December 2013. Darrell L. Ash ranks #284,196 of 4,157,543 US inventors in our database (top 6.8%). Patent records list Darrell L. Ash in Garland, TX, US.
Patents per Year Patents granted per year, 1983 to 2013 Bar chart with a peak of 3 patents in 1987. peak 3 1983: 1 patents 1983 1987: 3 patents 1987 1988: 3 patents 1988 1994: 2 patents 1994 1998: 2 patents 1998 2005: 2 patents 2005 2007: 2 patents 2007 2013: 1 patents 2013
Issued Patents All Time
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Showing 1–16 of 16 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
8598924 Frequency-locked synthesizer with low power consumption and related system and method — 2013-12-03
7260375 Frequency agile RF circuit — 2007-08-21
$383,000
7199674 Low phase noise, wide tune range saw oscillators and methods of operating the same — 2007-04-03
$429,000
6914493 Noise resistant low phase noise, frequency tracking oscillators and methods of operating the same — 2005-07-05
$820,000
6909334 Low phase noise, wide tune range saw oscillators and methods of operating the same — 2005-06-21
$789,000
5789990 Feedback oscillator circuit using a saw resonator filter Benjamin Paul Abbott 1998-08-04
$918,000
5787117 Receiver/transmitter having common elements — 1998-07-28
$974,000
5357207 Sequential amplifier — 1994-10-18
$399,000
5357206 Sequential amplifier — 1994-10-18
$399,000
4761616 Voltage controlled oscillator — 1988-08-02
4760352 Coupled resonator phase shift oscillator — 1988-07-26
4749964 Superregenerative detector having a saw device in the feedback circuit — 1988-06-07
4682224 System, method, and apparatus for television signal scrambling and descrambling Lawrence H. Ragan , Clinton S. Hatmann 1987-07-21
4682223 Descrambler unit method and apparatus for television signal descrambling Lawrence H. Ragan , Clinton S. Hartmann 1987-07-21
4663664 Electronic ticket method and apparatus for television signal scrambling and descrambling Lawrence H. Ragan , Clinton S. Hartmann 1987-05-05
4408347 High-frequency channel selector having fixed bandpass filters in the RF section — 1983-10-04
$6,932,000