Inventor · disambiguated record
Jeffrey J. Marrah
Also filed as: MARRAH JEFFREY J · MARRAH JEFFREY JOSEPH
23 granted patents·4 pending applications·436 citations·filing 1988–2009
96Inventor score
Top patents by PatentIndex Score
27 records- 0189US7903629B2Hierarchically modulated OFDM communication from a satellite-based transmitter with reduced secondary data loss from clippingDELPHI TECH INC·Filed 2009·Granted Mar 8, 2011·20 cites·12 claims
- 0283US6526268B1Mobile weather band radio and methodDELPHI TECH INC·Filed 1999·Granted Feb 25, 2003·142 cites·40 claims
- 0377US7565126B2RF receiver system having switched antenna diversity moduleDELPHI TECH INC·Filed 2006·Granted Jul 21, 2009·7 cites·20 claims
- 0476US7668525B2System and method of a stereo receiving systemDELPHI TECH INC·Filed 2007·Granted Feb 23, 2010·4 cites·20 claims
- 0575US4970474AAnalog/digital phase locked loopDELCO ELECTRONICS CORP·Filed 1989·Granted Nov 13, 1990·25 cites·6 claims
- 0672US7623594B2Satellite receiver systemDELPHI TECH INC·Filed 2006·Granted Nov 24, 2009·4 cites·29 claims
- 0769US6728522B1Weather band radio and method of tuning sameDELPHI TECH INC·Filed 1999·Granted Apr 27, 2004·64 cites·28 claims
- 0869US5028893ASwitched capacitor filters with continuous time controlDELCO ELECTRONICS CORP·Filed 1990·Granted Jul 2, 1991·21 cites·17 claims
- 0959US4972446AVoltage controlled oscillator using dual modulus dividerDELCO ELECTRONICS CORP·Filed 1989·Granted Nov 20, 1990·14 cites·5 claims
- 1058US6917794B2Phase compensation circuitDELPHI TECH INC·Filed 2001·Granted Jul 12, 2005·7 cites·14 claims
- 1153US5937337AMethod and apparatus for reducing FM intrusion in AM receiversDELCO ELECTRONICS CORP·Filed 1996·Granted Aug 10, 1999·17 cites·9 claims
- 1249US5261004ANoise blanking circuit for AM steroDELCO ELECTRONICS CORP·Filed 1991·Granted Nov 9, 1993·20 cites·8 claims
- 1348US5991609ALow cost digital automatic alignment method and apparatusDELCO ELECTRONICS CORP·Filed 1996·Granted Nov 23, 1999·18 cites·18 claims
- 1448US4959859AFM Channel separation adjustmentDELCO ELECTRONICS CORP·Filed 1988·Granted Sep 25, 1990·13 cites·4 claims
- 1548US2008273715A1Vehicle external speaker and communication systemSNIDER CHRIS R·Filed 2007·Application pending·0 cites
- 1647US5028882AMultiple output operational amplifierDELCO ELECTRONICS CORP·Filed 1990·Granted Jul 2, 1991·9 cites·19 claims
- 1746US4882548ALow distortion current mirrorDELCO ELECTRONICS CORP·Filed 1988·Granted Nov 21, 1989·7 cites·7 claims
- 1845US2007021053A1Wireless satellite radio distribution networkMARRAH JEFFREY J·Filed 2005·Application pending·0 cites
- 1944US4975953ACombined deemphasis circuit and noise blankerDELCO ELECTRONICS CORP·Filed 1989·Granted Dec 4, 1990·8 cites·4 claims
- 2044US2007281626A1Vehicle telematics satellite data transceiver utilizing fm radio circuitryDOBOSZ PAUL J·Filed 2006·Application pending·0 cites
- 2140US5014316ACompatible quadrature amplitude modulation detector systemDELCO ELECTRONICS CORP·Filed 1990·Granted May 7, 1991·11 cites·24 claims
- 2239US4947431AHeld music history circuitDELCO ELECTRONICS CORP·Filed 1989·Granted Aug 7, 1990·6 cites·5 claims
- 2338US5151939AAdaptive audio processor for am stereo signalsDELCO ELECTRONICS CORP·Filed 1990·Granted Sep 29, 1992·11 cites·14 claims
- 2438US4932058APilot cancellation circuitDELCO ELECTRONICS CORP·Filed 1989·Granted Jun 5, 1990·7 cites·3 claims
- 2535US2004043733A1Enhanced automatic gain controlDELPHI TECH INC·Filed 2002·Application pending·0 cites
- 2630US4933974ASwitched capacitor pilot phase and magnitude detectorDELCO ELECTRONICS CORP·Filed 1989·Granted Jun 12, 1990·0 cites·8 claims
- 2730US4901350AClosed-loop audio attenuatorDELCO ELECTRONICS CORP·Filed 1989·Granted Feb 13, 1990·1 cites·3 claims
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