Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10762927 | Method to log audio in a distributed, immutable transaction log for end-to-end verification and auditing | Yunhai Yang, George R. Economy | 2020-09-01 |
| 10764267 | Device registration via authentication transference | David R. Mills, Mark A. Boerger | 2020-09-01 |
| 10027801 | Methods and systems for controlling inter-agency, incident scene communications | Srividya G. Subramanyam | 2018-07-17 |
| 9686656 | Method and apparatus for controlling group affiliation for a user with multiple mobile devices | Madhusudan Pai, Ilya Freytsis, Scott J. Pappas | 2017-06-20 |
| 9609541 | Method and apparatus for device collaboration via a hybrid network | Anthony R. Metke | 2017-03-28 |
| 9420465 | Method and apparatus for device collaboration via a hybrid network | Anthony R. Metke | 2016-08-16 |
| 9391953 | Method, device, and system for notifying mobile stations participating in a non-LLE call of new LLE call | Michael C. Petrie, Harish Natarahjan | 2016-07-12 |
| 9332428 | Method and device for managing encrypted group rekeying in a radio network link layer encryption system | Chris A. Kruegel, Hans Christopher Sowa | 2016-05-03 |
| 9301087 | Method and apparatus for connecting a bluetooth device | Scott J. Pappas, Hope E Braun, James M. Nowakowski | 2016-03-29 |
| 9232376 | Concurrent voice and data service on a same digital radio channel | Nathanael P. Kuehner, Todd A. Leigh, Harish Natarahjan, Robert J. Novorita, Mark Shahaf | 2016-01-05 |
| 9143321 | Communication protocol for secure communications systems | Helen Y. Hoselton, Obaid Shahab | 2015-09-22 |
| 9071964 | Method and apparatus for authenticating a digital certificate status and authorization credentials | Chris A. Kruegel, Timothy G. Woodward | 2015-06-30 |
| 8948378 | Method and device for rekeying in a radio network link layer encryption system | Hans Christopher Sowa | 2015-02-03 |
| 8948396 | Method for a communication device to operate with multiple key management facilities | Chris A. Kruegel, Timothy G. Woodward | 2015-02-03 |
| 8824681 | Method and device for link layer decrypting and/or encrypting a voice message stream already supporting end to end encryption | Chris A. Kruegel, Michael C. Petrie, Harish Natarahjan | 2014-09-02 |
| 8781132 | Method and device for managing encrypted group rekeying in a radio network link layer encryption system | Chris A. Kruegel, Hans Christopher Sowa | 2014-07-15 |
| 8724812 | Methods for establishing a secure point-to-point call on a trunked network | Adam C. Lewis, Anthony R. Metke, George Popovich, Shanthi E. Thomas | 2014-05-13 |
| 8650404 | Communication protocol for secure communications systems | Helen Y. Hoselton, Obaid Shahab | 2014-02-11 |
| 8526947 | Method and apparatus for enabling efficient battery use on a dual mode communication device | Mark Shahaf | 2013-09-03 |
| 8509448 | Methods and device for secure transfer of symmetric encryption keys | Shanthi E. Thomas, Michael W. Bright, Chris A. Kruegel, Anthony R. Metke, Scott J. Pappas | 2013-08-13 |
| 8448235 | Method for key identification using an internet security association and key management based protocol | Timothy M. Langham | 2013-05-21 |
| 8059817 | Method and apparatus for encrypted communications using IPsec keys | Chris A. Kruegel, Michael W. Bright, Dipendra M. Chowdhary, Timothy G. Woodward, LARRY MURRILL | 2011-11-15 |
| 7729701 | Method and system of accessing a de-keyed base station | David G. Wiatrowski, Thomas B. Bohn | 2010-06-01 |
| 7499441 | Method for allowing a subscriber unit to access a channel for voice transmissions | David G. Wiatrowski, Thomas B. Bohn, John P. Belmonte, Terry K. Mansfield | 2009-03-03 |
| 7369869 | Method and system of scanning a TDMA channel | David G. Wiatrowski, Thomas B. Bohn, Satyanarayan R. Panpaliya | 2008-05-06 |