Issued Patents All Time
Showing 51–62 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5200999 | Public key cryptosystem key management based on control vectors | Stephen M. Matyas, An V. Le, Rostislaw Prymak, William C. Martin, William S. Rohland +1 more | 1993-04-06 |
| 5177791 | Secure translation of usage-control values for cryptographic keys | Phil C. Yeh, Dennis G. Abraham, An Van Le, Stephen M. Matyas, Rotislaw Prymak +2 more | 1993-01-05 |
| 5164988 | Method to establish and enforce a network cryptographic security policy in a public key cryptosystem | Stephen M. Matyas, An V. Le, Rostislaw Prymak, William C. Martin, William S. Rohland +1 more | 1992-11-17 |
| 5142578 | Hybrid public key algorithm/data encryption algorithm key distribution method based on control vectors | Stephen M. Matyas, An V. Le, Rostislaw Prymak, John D. Wilkins, William C. Martin +1 more | 1992-08-25 |
| 5103478 | Secure management of keys using control vectors with multi-path checking | Stephen M. Matyas, Dennis G. Abraham, Ramesh K. Karne, An V. Le, Patrick McCormack +2 more | 1992-04-07 |
| 5073934 | Method and apparatus for controlling the use of a public key, based on the level of import integrity for the key | Stephen M. Matyas, An V. Le, William C. Martin, Rostislaw Prymak, William S. Rohland +1 more | 1991-12-17 |
| 5007089 | Secure key management using programable control vector checking | Stephen M. Matyas, An V. Le, William C. Martin, Rostislaw Prymak, John D. Wilkins | 1991-04-09 |
| 4993069 | Secure key management using control vector translation | Stephen M. Matyas, Dennis G. Abraham, An V. Le, Rostislaw Prymak, John D. Wilkins +1 more | 1991-02-12 |
| 4941176 | Secure management of keys using control vectors | Stephen M. Matyas, Dennis G. Abraham, Ramesh K. Karne, An V. Le, Rostislaw Prymak +3 more | 1990-07-10 |
| 4924514 | Personal identification number processing using control vectors | Stephen M. Matyas, Dennis G. Abraham, Ramesh K. Karne, An V. Le, Rostislaw Prymak +4 more | 1990-05-08 |
| 4924515 | Secure management of keys using extended control vectors | Stephen M. Matyas, Dennis G. Abraham, William Arnold, Ramesh K. Karne, An V. Le +3 more | 1990-05-08 |
| 4918728 | Data cryptography operations using control vectors | Stephen M. Matyas, Dennis G. Abraham, Ramesh K. Karne, An V. Le, Rostislaw Prymak +3 more | 1990-04-17 |