Stephen M. Matyas
94Patents
54h-index
73Co-inventors
91Inventor score
Filing activity: Dec 5, 1977 → Aug 29, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5319705A | Method and system for multimedia access control enablement | Electricity | 790 | Expired |
| US5414833A | Network security system and method using a parallel finite state machine adaptive active monitor and responder | Physics | 676 | Expired |
| US5745678A | Method and system for the secured distribution of multimedia titles | Physics | 438 | Expired |
| US5592553A | Authentication system using one-time passwords | Electricity | 417 | Expired |
| US5937066A | Two-phase cryptographic key recovery system | Electricity | 325 | Expired |
| US6947556B1 | Secure data storage and retrieval with key management and user authentication | Physics | 299 | Expired |
| US5604801A | Public key data communications system under control of a portable security device | Electricity | 283 | Expired |
| US4757534A | Code protection using cryptography | Physics | 283 | Expired |
| US4755940A | Transaction security system | Physics | 266 | Expired |
| US6697947B1 | Biometric based multi-party authentication | Electricity | 235 | Expired |
| US4203166A | Cryptographic file security for multiple domain networks | Physics | 229 | Expired |
| US5164988A | Method to establish and enforce a network cryptographic security policy in a public key cryptosystem | Electricity | 226 | Expired |
| US5200999A | Public key cryptosystem key management based on control vectors | Electricity | 221 | Expired |
| US5265164A | Cryptographic facility environment backup/restore and replication in a public key cryptosystem | Electricity | 219 | Expired |
| US4238854A | Cryptographic file security for single domain networks | Electricity | 214 | Expired |
| US7010689B1 | Secure data storage and retrieval in a client-server environment | Electricity | 209 | Expired |
| US5142578A | Hybrid public key algorithm/data encryption algorithm key distribution method based on control vectors | Electricity | 203 | Expired |
| US5201000A | Method for generating public and private key pairs without using a passphrase | Electricity | 203 | Expired |
| US5301231A | User defined function facility | Physics | 201 | Expired |
| US4218738A | Method for authenticating the identity of a user of an information system | Physics | 189 | Expired |
| US4238853A | Cryptographic communication security for single domain networks | Electricity | 181 | Expired |
| US5912974A | Apparatus and method for authentication of printed documents | Electricity | 181 | Expired |
| US5907618A | Method and apparatus for verifiably providing key recovery information in a cryptographic system | Electricity | 151 | Expired |
| US4649233A | Method for establishing user authenication with composite session keys among cryptographically communicating nodes | Electricity | 142 | Expired |
| US4227253A | Cryptographic communication security for multiple domain networks | Electricity | 142 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.