Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7782141 | Adaptive signal-feed-forward circuit and method for reducing amplifier power without signal distortion | Lunal Khuon, Brian K. Kullberg | 2010-08-24 |
| 6999581 | Event detection circuit | Tony S. El-Kik, Keith Eugene Hollenbach, Donald R. Laturell | 2006-02-14 |
| 6920218 | Combination clock and charge pump for line powered DAA | Timothy W. Fuehrer, Keith Eugene Hollenbach, Donald R. Laturell | 2005-07-19 |
| 6744888 | Line interface circuit with event detection signaling | Tony S. El-Kik, Keith Eugene Hollenbach, Donald R. Laturell | 2004-06-01 |
| 6731728 | Low noise line powered DAA with differential feedback | Keith Eugene Hollenbach, Donald R. Laturell | 2004-05-04 |
| 6674856 | Placement of a transmit predistortion filter with respect to a data access arrangement | Paul D. Hendricks, Donald R. Laturell, Lane A. Smith | 2004-01-06 |
| 6625278 | Impedance matching with sigma delta filter | Paul D. Hendricks, Donald R. Laturell, Lane A. Smith | 2003-09-23 |
| 6553118 | Method and apparatus for calculating DC offset in a digital gyrator | Lane A. Smith, Jonathan H. Fischer, Donald R. Laturell | 2003-04-22 |
| 6421430 | Line powered DAA with single ended feedback | Keith Eugene Hollenbach, Donald R. Laturell | 2002-07-16 |
| 6418220 | Extended feedback circuit employing capacitive coupling and sampled data filters | Jonathan H. Fischer, Donald R. Laturell, Keith Eugene Hollenbach | 2002-07-09 |
| 6396877 | Method and apparatus for combining serial data with a clock signal | Keith Eugene Hollenbach, Donald R. Laturell | 2002-05-28 |
| 6275581 | Extended feedback circuit employing capacitive coupling and sampled data filters | Jonathon Fischer, Donald R. Laturell, Keith Eugene Hollenbach | 2001-08-14 |
| 6205219 | Call related information reception using sigma/delta modulation | Keith Eugene Hollenbach, Donald R. Laturell | 2001-03-20 |
| 6198944 | Method for telephone line interlock and cellular interconnect | Keith Eugene Hollenbach, Donald R. Laturell | 2001-03-06 |
| 5912513 | Method and apparatus for reducing power dissipation in DC termination circuit | Keith Eugene Hollenbach, Donald R. Laturell | 1999-06-15 |
| 5877565 | Communication card with telephone line interlock and cellular interconnect | Keith Eugene Hollenbach, Donald R. Laturell | 1999-03-02 |
| 5606482 | Solid state circuit breaker | — | 1997-02-25 |
| 5360979 | Fast turn-off circuit for solid-state relays or the like | Jerome Joseph, Michael F. Petras | 1994-11-01 |