Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7881362 | Method and apparatus for differentiated communication channel robustness in a multi-tone transceiver | Avadhani Shridhar, Sam Heidari, Ying Wu | 2011-02-01 |
| 7443918 | Method and apparatus for extending the frequency range of multi-tone modems | Sam Heidari | 2008-10-28 |
| 7443977 | Method and apparatus for a high efficiency line driver | Robert A. Blauschild, Sanjay Bhandari, Behrooz Rezvani, Dale Smith | 2008-10-28 |
| 7359444 | Method and apparatus for extending the frequency range of multi-tone modems | Sam Heidari | 2008-04-15 |
| 7092412 | Method and apparatus for long haul high speed data transmission over XDSL pseudo channels | Behrooz Rezvani, Sushil Agrawal | 2006-08-15 |
| 6987851 | Method and apparatus for a high efficiency line driver | Robert A. Blauschild, Sanjay Bhandari, Behrooz Rezvani, Dale Smith | 2006-01-17 |
| 5920609 | Metallic access test extension system architecture | Paul R. Bauer, Brad T. Darnell, Marco Ruiz | 1999-07-06 |
| 5790062 | Delta modulator with pseudo constant modulation level | Brad T. Darnell, Paul R. Bauer | 1998-08-04 |
| 5764727 | Metallic access test extender | Georg Arnold, Brad T. Darnell | 1998-06-09 |
| 4631362 | Low resistance origination scan circuit | Tom D. Arntsen, Milton L. Embree, Joseph H. Havens | 1986-12-23 |
| 4612417 | Electronic battery feed circuit for telephone systems | — | 1986-09-16 |
| 4447675 | Ring-trip detector | Tom D. Arntsen | 1984-05-08 |
| 4395675 | Transformerless noninverting buck boost switching regulator | — | 1983-07-26 |