Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34954 | Method for secure time-stamping of digital documents | Stuart Haber | 1995-05-30 |
| 5373561 | Method of extending the validity of a cryptographic certificate | Stuart Haber | 1994-12-13 |
| 5136646 | Digital document time-stamping with catenate certificate | Stuart Haber | 1992-08-04 |
| 5136647 | Method for secure time-stamping of digital documents | Stuart Haber | 1992-08-04 |