Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8578063 | Self-labeling digital storage unit | Michael S. Battaglia, Randal Martin, Steve Armfield | 2013-11-05 |
| 7983522 | Enhanced digital data collector for removable memory modules | Michael S. Battaglia, Offie Lee Drennan | 2011-07-19 |
| 7436957 | Audio cassette emulator with cryptographic media distribution control | Robert L. Protheroe | 2008-10-14 |
| 7146009 | Secure electronic messaging system requiring key retrieval for deriving decryption keys | Dimitrios Emmanouil Andivahis, Shawn Michael Edwards Carnell, Albert J. Wettlaufer | 2006-12-05 |
| 6987927 | Enhanced digital data collector for removable memory modules | Michael S. Battaglia, Offie Lee Drennan | 2006-01-17 |
| RE38899 | Method for providing location certificates | — | 2005-11-29 |
| 6941180 | Audio cassette emulator | Robert L. Protheroa | 2005-09-06 |
| 6865678 | Personal date/time notary device | — | 2005-03-08 |
| 6408388 | Personal date/time notary device | — | 2002-06-18 |
| 6216229 | Method for preventing inadvertent betrayal by a trustee of escrowed digital secrets | — | 2001-04-10 |
| 6141423 | Method for preventing inadvertent betrayal by a trustee of escrowed digital secrets | — | 2000-10-31 |
| 6105072 | Method and apparatus for validating travelling object-oriented programs with digital signatures | — | 2000-08-15 |
| 5936149 | Personal date/time notary device | — | 1999-08-10 |
| 5748960 | Method and apparatus for validating travelling object-oriented programs with digital signatures | — | 1998-05-05 |
| 5694569 | Method for protecting a volatile file using a single hash | — | 1997-12-02 |
| 5659617 | Method for providing location certificates | — | 1997-08-19 |
| 5475826 | Method for protecting a volatile file using a single hash | — | 1995-12-12 |
| 5436972 | Method for preventing inadvertent betrayal by a trustee of escrowed digital secrets | — | 1995-07-25 |
| 5422953 | Personal date/time notary device | — | 1995-06-06 |
| 5412717 | Computer system security method and apparatus having program authorization information data structures | — | 1995-05-02 |
| 5390247 | Method and apparatus for creating, supporting, and using travelling programs | — | 1995-02-14 |
| 5337360 | Method and apparatus for creating, supporting, and using travelling programs | — | 1994-08-09 |
| 5311591 | Computer system security method and apparatus for creating and using program authorization information data structures | — | 1994-05-10 |
| 5214702 | Public key/signature cryptosystem with enhanced digital signature certification | — | 1993-05-25 |
| 5136643 | Public/key date-time notary facility | — | 1992-08-04 |