Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426980 | Method and apparatus for communicating a call | Paul E. Gorday, William J. Kuznicki, Thomas V. D'Amico | 2002-07-30 |
| 6163698 | Link setup method for a narrowband cellular communication system | Thomas V. D'Amico | 2000-12-19 |
| 6002342 | Communication system and device having unit locating feature | — | 1999-12-14 |
| 5920840 | Communication system and method using a speaker dependent time-scaling technique | Sunil Satyamurti, Robert J. Schwendeman, Kazimierz Siwiak, William J. Kuznicki | 1999-07-06 |
| 5729575 | Transmitter and receiver system and method utilizing a pilot carrier notch data encoded signal | — | 1998-03-17 |
| 5710546 | Apparatus for encoding and decoding a digital radio signal | — | 1998-01-20 |
| 5689440 | Voice compression method and apparatus in a communication system | Robert J. Schwendeman, Kazimierz Siwiak, William J. Kuznicki, Sunil Satyamurti | 1997-11-18 |
| 5559506 | Method and apparatus for encoding and decoding a digital radio signal | — | 1996-09-24 |
| 5546411 | Method and apparatus for adaptively selecting a communication strategy in a selective call radio communication system | Robert J. Schwendeman, Philip P. Macnak | 1996-08-13 |
| 5239275 | Amplitude modulator circuit having multiple power supplies | — | 1993-08-24 |
| 5239306 | Dual mode receiver having battery saving capability | Kazimierz Siwiak, Robert J. Schwendeman | 1993-08-24 |
| 5202900 | Spectrally efficient digital FM modulated transmitter | — | 1993-04-13 |
| 5142279 | Acknowledge back paging system having the capability of matching variable length data messages to pager addresses | Leon Jasinski, Francis R. Steel, Lynne A. Steel | 1992-08-25 |
| 5068874 | Spectrally efficient digital FM modulation system | — | 1991-11-26 |
| 5066922 | Stabilizing circuit for feedback RF amplifier | — | 1991-11-19 |
| 5038403 | Simulcast system with minimal delay dispersion and optimal power contouring | — | 1991-08-06 |
| 5029187 | Digital correlation receiver | — | 1991-07-02 |
| 5020017 | Method and apparatus for obtaining the quotient of two numbers within one clock cycle | William J. Ooms, Rene M. Delgado | 1991-05-28 |
| 4942592 | Synchronous receiver for minimum shift keying transmission | Francis R. Steel | 1990-07-17 |
| 4933986 | Gain/phase compensation for linear amplifier feedback loop | — | 1990-06-12 |
| 4910467 | Method and apparatus for decoding a quadrature modulated signal | — | 1990-03-20 |
| 4816783 | Method and apparatus for quadrature modulation | — | 1989-03-28 |
| 4737969 | Spectrally efficient digital modulation method and apparatus | Francis R. Steel, Jose I. Suarez | 1988-04-12 |
| 4596043 | High efficiency radio frequency signal amplifier for amplifying modulated radio frequency signals in a manner generating minimal splatter | — | 1986-06-17 |
| 4236042 | Compatible AM stereo system employing a modified quadrature modulation scheme | — | 1980-11-25 |