Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10524260 | Device, system and method for preventing audio loss | Yunhai Yang, Daniel J. McDonald | 2019-12-31 |
| 9402166 | Method and apparatus for assigning a talk group to a radio within a communication system | Daniel J. McDonald | 2016-07-26 |
| 9332428 | Method and device for managing encrypted group rekeying in a radio network link layer encryption system | Chris A. Kruegel, Thomas J. Senese | 2016-05-03 |
| 8964987 | Method and apparatus for storing and distributing encryption keys | Daniel J. McDonald, David J. Chater-Lea, Scott J. Pappas, Jason Johur, Dennis Newkirk +3 more | 2015-02-24 |
| 8948378 | Method and device for rekeying in a radio network link layer encryption system | Thomas J. Senese | 2015-02-03 |
| 8817989 | Method and apparatus for storing and distributing encryption keys | Daniel J. McDonald, David J. Chater-Lea, Scott J. Pappas, Jason Johur, Dennis Newkirk +3 more | 2014-08-26 |
| 8781132 | Method and device for managing encrypted group rekeying in a radio network link layer encryption system | Chris A. Kruegel, Thomas J. Senese | 2014-07-15 |
| 7840009 | Method and apparatus for storing and distributing encryption keys | Daniel J. McDonald, David J. Chater-Lea, Scott J. Pappas, Jason Johur, Dennis Newkirk +3 more | 2010-11-23 |
| 7707419 | Method and apparatus for storing and distributing encryption keys | Daniel J. McDonald, David J. Chater-Lea, Scott J. Pappas, Jason Johur, Dennis Newkirk +3 more | 2010-04-27 |
| 7522727 | Method and apparatus for providing authentication in a communication system | Daniel J. McDonald, David J. Chater-Lea, Scott J. Pappas, Jason Johur, Dennis Newkirk +2 more | 2009-04-21 |
| 7424116 | Method and apparatus for providing authentication in a communication system | Daniel J. McDonald, David J. Chater-Lea, Scott J. Pappas, Jason Johur, Dennis Newkirk +2 more | 2008-09-09 |
| 7266687 | Method and apparatus for storing and distributing encryption keys | Daniel J. McDonald, David J. Chater-Lea, Scott J. Pappas, Jason Johur, Dennis Newkirk +3 more | 2007-09-04 |
| 7123719 | Method and apparatus for providing authentication in a communication system | Daniel J. McDonald, David J. Chater-Lea, Scott J. Pappas, Jason Johur, Dennis Newkirk +2 more | 2006-10-17 |
| 5619572 | Method and apparatus for providing secure communications for a requested call | — | 1997-04-08 |
| 5412722 | Encryption key management | Mark J. Sherly, Michelle M. Bray | 1995-05-02 |
| 5161189 | Encryption and decryption of chained messages | Michelle M. Bray, Michael W. Bright | 1992-11-03 |