Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4386234 | Cryptographic communication and file security using terminals | William F. Ehrsam, Robert C. Elander, Stephen M. Matyas, Carl H. W. Meyer, Robert L. Powers +2 more | 1983-05-31 |
| 4238853 | Cryptographic communication security for single domain networks | William F. Ehrsam, Robert C. Elander, Stephen M. Matyas, Carl H. W. Meyer, Robert L. Powers +2 more | 1980-12-09 |
| 4193131 | Cryptographic verification of operational keys used in communication networks | Richard E. Lennon, Stephen M. Matyas, Carl H. W. Meyer, Jonathan Oseas, Walter L. Tuchman | 1980-03-11 |