Issued Patents All Time
Showing 1–25 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7515672 | Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with programmable current limiting | Timothy J. Dupuis, George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2009-04-07 |
| 7463675 | Direct digital access arrangement circuitry and method for connecting to phone lines | Jeffrey W. Scott, David R. Welland | 2008-12-09 |
| 7362841 | Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with switchable DC termination impedance | Timothy J. Dupuis, George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2008-04-22 |
| 7324496 | Highly integrated radio-frequency apparatus and associated methods | G. Tyson Tuttle | 2008-01-29 |
| 7301995 | Direct digital access arrangement circuitry and method for connecting to phone lines | Jeffrey W. Scott, David R. Welland | 2007-11-27 |
| 7283584 | Direct digital access arrangement circuitry and method for connecting to phone lines | Jeffrey W. Scott, David R. Welland | 2007-10-16 |
| 7254230 | Subscriber line interface circuitry | Jerrell P. Hein | 2007-08-07 |
| 7203224 | Isolation system with digital communication across a capacitive barrier | Jeffrey W. Scott, David R. Welland | 2007-04-10 |
| 7200167 | Direct digital access arrangement circuitry and method for connecting to phone lines | Jeffrey W. Scott, David R. Welland | 2007-04-03 |
| 7190785 | Subscriber line interface circuitry | Jerrell P. Hein | 2007-03-13 |
| 7180999 | Subscriber line interface circuitry | Jerrell P. Hein | 2007-02-20 |
| 7154940 | Isolation system with digital communication across a capacitive barrier | Jeffrey W. Scott, David R. Welland | 2006-12-26 |
| 7072389 | Direct digital access arrangement circuitry and method for connecting to phone lines | Jeffrey W. Scott, David R. Welland | 2006-07-04 |
| 7050509 | Digital isolation system with hybrid circuit in ADC calibration loop | Andrew W. Krone, Timothy J. Dupuis, Jeffrey W. Scott, David R. Welland | 2006-05-23 |
| 7046793 | Digital access arrangement circuitry and method having current ramping control of the hookswitch | George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2006-05-16 |
| 7046755 | Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with switchable time constants | Timothy J. Dupuis, George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2006-05-16 |
| 7003023 | Digital isolation system with ADC offset calibration | Andrew W. Krone, Timothy J. Dupuis, Jeffrey W. Scott, David R. Welland | 2006-02-21 |
| 6975723 | Architecture for minimum loop current during ringing and caller ID | Jeffrey W. Scott, David R. Welland, Jerrell P. Hein, Andrew W. Krone | 2005-12-13 |
| 6959083 | Loop current monitor circuitry and method for a communication system | Jeffrey W. Scott, Andrew W. Krone, David R. Welland | 2005-10-25 |
| 6934384 | Subscriber line interface circuitry | Jerrell P. Hein | 2005-08-23 |
| 6922469 | Separation of ring detection functions across isolation barrier for minimum power | Jeffrey W. Scott, David R. Welland, Jerrell P. Hein | 2005-07-26 |
| 6823066 | Digital access arrangement circuitry and method having current ramping control of the hookswitch | George Tyson Tuttle, Jeffrey W. Scott, David R. Welland | 2004-11-23 |
| 6754341 | External resistor and method to minimize power dissipation in DC holding circuitry for a communication system | Jeffrey W. Scott, David R. Welland | 2004-06-22 |
| 6683548 | Analog isolation system with digital communication across a capacitive barrier | Jeffrey W. Scott, David R. Welland | 2004-01-27 |
| 6654409 | Direct digital access arrangement circuitry and method for connecting DSL circuitry to phone lines | Jeffrey W. Scott, David R. Welland | 2003-11-25 |