Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6980799 | Method for preserving calls when service is interrupted to a mobile unit in a wireless communication system | Akhtar Akhteruzzaman, Paul Sand, Claudis Young | 2005-12-27 |
| 6823189 | System and method for identifying mobile communication apparatuses proximal with an identification locus | Akhter Akhteruzzaman, Paul Sand | 2004-11-23 |
| 6701156 | System and method for managing response to a need at a site | Akhter Akhteruzzaman, Paul Sand | 2004-03-02 |
| 6584316 | Handoff of phone calls from wireless to wireline network | Akhtar Akhteruzzaman, Paul Sand | 2003-06-24 |
| 6580787 | Integration of voice mail, email, fax and personal calendar systems to automatically update messages | Akhtar Akhteruzzaman, Richard Brockman, Paul Sand, Phillip Michael Sands | 2003-06-17 |
| 6405042 | Provision of cellular/wire-line service | Akhtar Akhteruzzaman, Paul Sand | 2002-06-11 |
| 6386803 | Drill for inexperienced users | Paul E. Maass | 2002-05-14 |
| 6026076 | Detecting digital multiplexer faults | Kenneth Habegger, Karen Louise Moeller, Ronald Keith Poole, Jaime E. Salazar, Mark Roman Sosinski | 2000-02-15 |
| 4379210 | Ringing detector for use by the deaf | — | 1983-04-05 |
| 4331913 | Precision negative impedance circuit with calibration | — | 1982-05-25 |
| 4283675 | Impedance/admittance measuring circuit | — | 1981-08-11 |
| 4224483 | Electronic loaded/nonloaded telephone loop identification circuit | James L. Neigh | 1980-09-23 |
| 4197429 | Gain-adjusting conference circuit | — | 1980-04-08 |