Issued Patents All Time
Showing 51–63 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6965767 | Communication device for entering and exiting a net within a group communication network | Douglas M. Crockett, Eric C. Rosen | 2005-11-15 |
| 6928294 | Method and apparatus for enabling group communication services in an existing communication system | Douglas M. Crockett, Eric C. Rosen | 2005-08-09 |
| 6912401 | Communication device for providing an efficient dormant mode for a group communication network | Eric C. Rosen | 2005-06-28 |
| 6904288 | Controller for providing an efficient dormant mode for a group communication network | Eric C. Rosen | 2005-06-07 |
| 6898436 | Communication device for joining a user to a group call in a group communication network | Douglas M. Crockett, Eric C. Rosen | 2005-05-24 |
| 6873854 | Method and an apparatus for adding a new member to an active group call in a group communication network | Douglas M. Crockett, Eric C. Rosen | 2005-03-29 |
| 6781963 | Method and an apparatus for terminating a user from a group call in a group communication network | Douglas M. Crockett, Eric C. Rosen | 2004-08-24 |
| 6738617 | Controller for reducing latency in a group dormancy-wakeup process in a group communication network | Eric C. Rosen | 2004-05-18 |
| 6725053 | Method and apparatus for reducing latency in waking up a group of dormant communication devices | Eric C. Rosen | 2004-04-20 |
| 6633765 | Method and apparatus for performing coverage control for multicast services in a wireless network | — | 2003-10-14 |
| 6477150 | System and method for providing group communication services in an existing communication system | Douglas M. Crockett, Eric C. Rosen | 2002-11-05 |
| 6301263 | Method and apparatus for providing fair access in a group communication system in which users experience differing signaling delays | — | 2001-10-09 |
| 6295284 | Method and apparatus for providing fair access in a group communication system | — | 2001-09-25 |