Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8792642 | Apparatus, system and method for detecting a loss of key stream system synchronization in a communication system | Wen-Ping Ying | 2014-07-29 |
| 8270608 | Apparatus, system and method for detecting a loss of key stream synchronization in a communication system | Wen-Ping Ying | 2012-09-18 |
| 7627121 | Apparatus, system and method for detecting a loss of key stream synchronization in a communication system | Wen-Ping Ying | 2009-12-01 |
| 6330333 | Cryptographic system for wireless communications | Semyon B. Mizikovsky | 2001-12-11 |
| 6111955 | Security in cellular telephones | Semyon B. Mizikovsky | 2000-08-29 |
| 5966450 | Variable mask for encryption generated independently at communications stations | Mark J. Hosford | 1999-10-12 |
| 5727064 | Cryptographic system for wireless communications | — | 1998-03-10 |
| 5724427 | Method and apparatus for autokey rotor encryption | — | 1998-03-03 |
| 5227788 | Method and apparatus for two-component signal compression | James David Johnston | 1993-07-13 |
| 5204902 | Cellular telephony authentication arrangement | Philip Andrew Treventi, I-Hsiang Yu | 1993-04-20 |
| 5172414 | Speech and control message encrypton in cellular radio | Philip Andrew Treventi | 1992-12-15 |
| 5159634 | Cryptosystem for cellular telephony | — | 1992-10-27 |
| 5153919 | Service provision authentication protocol | Philip Andrew Treventi | 1992-10-06 |
| 4984272 | Secure file handling in a computer operating system | M. Douglas McIlroy | 1991-01-08 |