Issued Patents All Time
Showing 1–25 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6772126 | Method and apparatus for transferring low bit rate digital voice messages using incremental messages | Floyd D. Simpson, Jian-Cheng Huang, Sunil Satyamurti, Kenneth Finlon | 2004-08-03 |
| 6137867 | Alphanumeric message composing method using telephone keypad | Surendra Perera, Lu Chang, Jian-Cheng Huang | 2000-10-24 |
| 6073094 | Voice compression by phoneme recognition and communication of phoneme indexes and voice features | Lu Chang, Jian-Cheng Huang | 2000-06-06 |
| 6052443 | Alphanumeric message composing method using telephone keypad | Surendra Perera, Lu Chang, Jian-Cheng Huang | 2000-04-18 |
| 6035207 | System and method for allocating frequency channels in a two-way messaging network | Zhonghe Wang | 2000-03-07 |
| 5974180 | Text compression transmitter and receiver | — | 1999-10-26 |
| 5974121 | Alphanumeric message composing method using telephone keypad | Surendra Perera, Lu Chang, Jian-Cheng Huang | 1999-10-26 |
| 5920840 | Communication system and method using a speaker dependent time-scaling technique | Sunil Satyamurti, Clifford D. Leitch, Kazimierz Siwiak, William J. Kuznicki | 1999-07-06 |
| 5905945 | Method and apparatus for improving the reliability of communicating a message from a portable subscriber unit to a base receiver in a two-way radio messaging system | Thomas Casey Hill, Slim Souissi, Thomas V. D'Amico | 1999-05-18 |
| 5903842 | System and method for allocating frequency channels in a two-way messaging network | Zhonghe Wang | 1999-05-11 |
| 5852780 | System and method for allocating frequency channels in a two-way messaging network | Zhonghe Wang | 1998-12-22 |
| 5805977 | Method and apparatus for controlling transmissions in a two-way selective call communication system | Thomas Casey Hill, Thomas V. D'Amico | 1998-09-08 |
| 5757281 | Multiple acknowledge-back response data paging | William J. Kuznicki | 1998-05-26 |
| 5737691 | System and method for allocating frequency channels in a two-way messaging network | Zhonghe Wang | 1998-04-07 |
| 5710766 | Method and apparatus for sharing a common bandwidth between two protocols in a radio communication system | — | 1998-01-20 |
| 5710639 | Scan line compressed facsimile communication system | William J. Kuznicki, Gregg Rasor | 1998-01-20 |
| 5689805 | Communication system and method providing minimum message transmission delay | Douglas I. Ayerst, William J. Kuznicki | 1997-11-18 |
| 5689440 | Voice compression method and apparatus in a communication system | Clifford D. Leitch, Kazimierz Siwiak, William J. Kuznicki, Sunil Satyamurti | 1997-11-18 |
| 5686898 | Paging network identification information distributed in address field | David F. Willard, Michael J. DeLuca | 1997-11-11 |
| 5649289 | Flexible mobility management in a two-way messaging system and method therefor | Zhonghe Wang | 1997-07-15 |
| 5617083 | Data communication receiver having variable length message carry-on | David R. Petreye | 1997-04-01 |
| 5600312 | Messaging system and method having roaming capability and controlled group messaging | David F. Willard, Eric Thomas Eaton, Barbara Diaz Laflin | 1997-02-04 |
| 5555183 | Method and apparatus for synchronizing to a synchronous selective call signal | David F. Willard, William J. Kuznicki, Michael J. DeLuca | 1996-09-10 |
| 5551061 | Apparatus and method in a radio communication system for distinguishing an identifier of a nearby transmitter from that of a more distant transmitter | — | 1996-08-27 |
| 5546411 | Method and apparatus for adaptively selecting a communication strategy in a selective call radio communication system | Clifford D. Leitch, Philip P. Macnak | 1996-08-13 |