Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9734723 | Process and system to register and regulate unmanned aerial vehicle operations | James Mathew Keller, Christian Ramsey | 2017-08-15 |
| 8169357 | Transmission scheduling for ADS-B ground systems | Boris Veytsman | 2012-05-01 |
| 7956795 | Transmission scheduling for ADS-B ground systems | Boris Veytsman | 2011-06-07 |
| 7313143 | Method for diversity site group operations in air/ground communications | — | 2007-12-25 |
| 7174179 | Methods and apparatus for mitigating rain fading over SATCOM links via information throughput adaptation | Lawrence W. Krebs, Robert J. Sims, III, Christopher Berger, Ronald H. Pawlikowski, Jr. | 2007-02-06 |
| RE38808 | Cellular positioning system (CPS) | Leonard Schuchman, Aaron Weinberg, Lloyd Engelbrecht | 2005-10-04 |
| 6850734 | Position enhanced communication system including system for embedding CDMA navigation beacons under the communications signals of a wireless communication system | Leonard Schuchman, Lloyd Engelbrecht | 2005-02-01 |
| 6538601 | Hybrid system for position determination by a mobile communications terminal | Leonard Schuchman | 2003-03-25 |
| 6226529 | System for providing a simultaneous data and voice channel within a single channel of a portable cellular telephone to provide position-enhanced cellular services (PECS) | Leonard Schuchman, Kenneth Cunningham, Robert McCarthy | 2001-05-01 |
| 6160837 | Method of avoiding near-far interference problems in an array of navigation signal beacons having selected CDMA or GPS-like navigation signals | Leonard Schuchman, Lloyd Engelbrecht | 2000-12-12 |
| 6111538 | Cellular positioning system (CPS) | Leonard Schuchman, Lloyd Engelbrecht, Aaron Weinberg | 2000-08-29 |
| 6049548 | Multi-access CS-P/CD-E system and protocols on satellite channels applicable to a group of mobile users in close proximity | Leonard Schuchman | 2000-04-11 |
| 5912917 | Digital broadcast system | Lloyd Engelbrecht, Leonard Schuchman | 1999-06-15 |
| 5798726 | Air traffic surveillance and communication system | Leonard Schuchman, John Kefaliotis, Steve Greenberg, Edward J. Zakrzewski | 1998-08-25 |
| 5726893 | Cellular telephone with voice-in-data modem | Leonard Schuchman, Charles Moses | 1998-03-10 |
| 5701328 | Chirped spread spectrum positioning system | Leonard Schuchman | 1997-12-23 |
| 5638399 | Multi-beam satellite communication system with user terminal frequencies having transceivers using the same set of frequency hopping | Leonard Schuchman, Aaron Weinberg | 1997-06-10 |
| 5630206 | Position enhanced cellular telephone system | G. Daniel Urban, Robert McCarthy, David Schuchman | 1997-05-13 |
| 5604765 | Position enhanced communication system including system for embedding CDMA navigation beacons under the communications signals of a wireless communication system | Leonard Schuchman, Lloyd Engelbrecht | 1997-02-18 |
| 5459469 | Air traffic surveillance and communication system | Leonard Schuchman, John Kefaliotis, Steve Greenberg, Edward J. Zakrzewski | 1995-10-17 |
| 5365450 | Hybrid GPS/data line unit for rapid, precise, and robust position determination | Leonard Schuchman, Robert Rennard, Charles Moses | 1994-11-15 |
| 5351270 | Portable cellular telephone using spread spectrum communication with mobile transceiver | Hatch Graham, Charles Moses, Leonard Schuchman | 1994-09-27 |
| 5283780 | Digital audio broadcasting system | Leonard Schuchman, John Earle Miller | 1994-02-01 |