Issued Patents All Time
Showing 201–225 of 227 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6871061 | Systems, methods and terminals that obtain coarse position information from satellite radiotelephone systems | Havish Koorapaty | 2005-03-22 |
| 6859652 | Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis | Rajendra Singh | 2005-02-22 |
| 6856787 | Wireless communications systems and methods using satellite-linked remote terminal interface subsystems | — | 2005-02-15 |
| 6788917 | Timing systems and methods for forward link diversity in satellite radiotelephone systems | Wail Refai | 2004-09-07 |
| 6785543 | Filters for combined radiotelephone/GPS terminals | — | 2004-08-31 |
| 6684057 | Systems and methods for terrestrial reuse of cellular satellite frequency spectrum | — | 2004-01-27 |
| 6650868 | Mobile satellite phone system incorporating symmetrical and non-symmetrical waveform modes | — | 2003-11-18 |
| 6549788 | Combination cellular/satellite wireless communication devices | Gregory A. O'Neill, Jr., Yawei Ma | 2003-04-15 |
| 6490435 | Flip cover and antenna assembly for a portable phone | Yawei Ma, Gerard James Hayes, James D. MacDonald, Jr. | 2002-12-03 |
| 6134437 | Dual-mode satellite/cellular phone architecture with physically separable mode | Nils Rydbeck, Michael Kornby | 2000-10-17 |
| 6081709 | Mobile satellite radiotelephone systems and methods including mobile radiotelephone bandwidth conversion | — | 2000-06-27 |
| 6052560 | Satellite system utilizing a plurality of air interface standards and method employing same | — | 2000-04-18 |
| 6052586 | Fixed and mobile satellite radiotelephone systems and methods with capacity sharing | — | 2000-04-18 |
| 5954834 | Systems and methods for communicating desired audio information over a communications medium | Amer A. Hassan, Yongbing Wan | 1999-09-21 |
| 5937332 | Satellite telecommunications repeaters and retransmission methods | — | 1999-08-10 |
| 5907306 | Retractable radiotelephone antennas and associated radiotelephone communication methods | Yawei Ma, Stanley Reinhold | 1999-05-25 |
| 5812968 | Vocoder apparatus using the link margin | Amer A. Hassan, Nils Rydbeck | 1998-09-22 |
| 5752204 | Antenna assembly for radiotelephonic device | Darrell G. Epperson, Sandeep Chennakeshu | 1998-05-12 |
| 4780884 | Suppressed double-sideband communication system | — | 1988-10-25 |
| 4759037 | Passband equalization of modulated quadrature-related carrier signals | Walter Debus, Jr. | 1988-07-19 |
| 4635276 | Asynchronous and non-data decision directed equalizer adjustment | — | 1987-01-06 |
| 4564952 | Compensation of filter symbol interference by adaptive estimation of received symbol sequences | Thomas Lance Osborne | 1986-01-14 |
| 4481645 | Linear distortion canceller circuit | — | 1984-11-06 |
| 4415872 | Adaptive equalizer | — | 1983-11-15 |
| 4403351 | Method and apparatus for distinguishing between minimum and non-minimum phase fades | — | 1983-09-06 |