Frey; Douglas R.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Frey; Douglas R..The latest application filed is for "transport of an analog signal across an isolation barrier".
- Frey; Douglas R. - Bethlehem PA
- Frey; Douglas R. - Austin TX
| Patent | Date |
|---|---|
| Transport of an analog signal across an isolation barrier Grant 9,143,373 - Sonntag , et al. September 22, 2 | 2015-09-22 |
| Transport Of An Analog Signal Across An Isolation Barrier App 20150063434 - Sonntag; Jeffrey L. ; et al. | 2015-03-05 |
| Subscriber Line Interface Circuitry Line Driver App 20120002801 - Frey; Douglas R. | 2012-01-05 |
| Power supply with digital control loop Grant 7,688,119 - Thompson , et al. March 30, 2 | 2010-03-30 |
| Power Supply with Digital Control Loop App 20090243701 - Thompson; Geoffrey ; et al. | 2009-10-01 |
| Power Supply with Digital Control Loop App 20090243578 - Wahby; Riad ; et al. | 2009-10-01 |
| Power Supply with Digital Control Loop App 20090243572 - Mills; Michael J. ; et al. | 2009-10-01 |
| Dividerless PLL architecture Grant 7,548,123 - Frey June 16, 2 | 2009-06-16 |
| Dividerless Pll Architecture App 20090015338 - Frey; Douglas R. | 2009-01-15 |
| Phase Error Cancellation App 20080211588 - Frey; Douglas R. ; et al. | 2008-09-04 |
| Adaptive Power Offloading for a Subscriber Line Interface Circuit App 20080080701 - Goldenberg; Marius ; et al. | 2008-04-03 |
| Integrated driver circuitry Grant 7,269,254 - Frey September 11, 2 | 2007-09-11 |
| Digital-to-analog converter switching circuitry Grant 6,909,390 - Khoini-Poorfard , et al. June 21, 2 | 2005-06-21 |
| Digital-to-analog converter switching circuitry App 20040119621 - Khoini-Poorfard, Ramin ; et al. | 2004-06-24 |
| Digitally controlled crystal oscillator with integrated coarse and fine control Grant 6,747,522 - Pietruszynski , et al. June 8, 2 | 2004-06-08 |
| Integrated driver circuitry App 20030219111 - Frey, Douglas R. | 2003-11-27 |
| Digitally controlled crystal oscillator with integrated coarse and fine control App 20030206070 - Pietruszynski, David M. ; et al. | 2003-11-06 |
| Digital-to-analog converter switching circuitry Grant 6,639,534 - Khoini-Poorfard , et al. October 28, 2 | 2003-10-28 |
| Digital-to-analog Converter Switching Circuitry App 20030151533 - Khoini-Poorfard, Ramin ; et al. | 2003-08-14 |
| Signal conditioning circuit for compressing audio signals Grant 5,631,968 - Frey , et al. May 20, 1 | 1997-05-20 |
| Explicit log domain root-mean-square detector Grant 5,585,757 - Frey December 17, 1 | 1996-12-17 |
| Voltage controlled amplifier Grant 5,528,197 - Frey June 18, 1 | 1996-06-18 |
| Universal battery charger Grant 5,270,635 - Hoffman , et al. December 14, 1 | 1993-12-14 |
| Universal battery charger Grant 5,113,127 - Hoffman , et al. May 12, 1 | 1992-05-12 |
| Dynamically biased voltage controlled element Grant 4,823,093 - Frey April 18, 1 | 1989-04-18 |
| Adjustable distortion guitar amplifier Grant 4,495,640 - Frey January 22, 1 | 1985-01-22 |
| Voltage controlled element Grant 4,471,320 - Frey September 11, 1 | 1984-09-11 |
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