Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8771591 | Silver alloy with high tarnish resistance | — | 2014-07-08 |
| 8479009 | Wearable time-bracketed video authentication | Mavis Donkor | 2013-07-02 |
| 8136370 | Silver-palladium alloy | — | 2012-03-20 |
| 7792296 | Access-controlled encrypted recording method for site, interaction and process monitoring | — | 2010-09-07 |
| 7477740 | Access-controlled encrypted recording system for site, interaction and process monitoring | — | 2009-01-13 |
| 5764769 | Digital recording system with time-bracketed authentication by on-line challenges and method of authenticating recordings | David P. DiVincenzo, Ralph Linsker | 1998-06-09 |
| 5680455 | Digital signature generator /verifier/ recorder (DS-GVR) for analog transmissions | Ralph Linsker | 1997-10-21 |
| 5598473 | Digital signature generator/verifier/recorder (DS-GVR) for analog transmissions | Ralph Linsker | 1997-01-28 |
| 5515438 | Quantum key distribution using non-orthogonal macroscopic signals | Stephen J. Wiesner | 1996-05-07 |
| 5307410 | Interferometric quantum cryptographic key distribution system | — | 1994-04-26 |
| 4886106 | Die cast machine with a turret | — | 1989-12-12 |
| 4382440 | Smoke and pollutant filtering device | Nancy J. Kapp | 1983-05-10 |
| 4228587 | Combined razor holder and shaving fluid dispenser | — | 1980-10-21 |