Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4755940 | Transaction security system | Bruno O. Brachtl, Christopher J. Holloway, Stephen M. Matyas, Carl H. W. Meyer, Jonathan Oseas | 1988-07-05 |
| 4747050 | Transaction security system using time variant parameter | Bruno O. Brachtl, Christopher J. Holloway, Stephen M. Matyas, Carl H. W. Meyer, Jonathan Oseas | 1988-05-24 |
| 4500750 | Cryptographic application for interbank verification | Robert C. Elander, Stephen M. Matyas, Carl H. W. Meyer, Robert E. Shuck, Walter L. Tuchman | 1985-02-19 |
| 4227253 | Cryptographic communication security for multiple domain networks | William F. Ehrsam, Robert C. Elander, Lloyd L. Hollis, Stephen M. Matyas, Carl H. W. Meyer +2 more | 1980-10-07 |
| 4193131 | Cryptographic verification of operational keys used in communication networks | Stephen M. Matyas, Carl H. W. Meyer, Jonathan Oseas, Paul N. Prentice, Walter L. Tuchman | 1980-03-11 |