Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8351087 | Authentication with built-in encryption by using moire parallax effects between fixed correlated s-random layers | Roger D. Hersch | 2013-01-08 |
| 7058202 | Authentication with built-in encryption by using moire intensity profiles between random layers | — | 2006-06-06 |
| 6819775 | Authentication of documents and valuable articles by using moire intensity profiles | Roger D. Hersch | 2004-11-16 |
| 6249588 | Method and apparatus for authentication of documents by using the intensity profile of moire patterns | Roger D. Hersch | 2001-06-19 |
| 5995638 | Methods and apparatus for authentication of documents by using the intensity profile of moire patterns | Roger D. Hersch | 1999-11-30 |