Patents per Year
Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8921011 | Optically variable device mastering system, method of authenticating articles employing the same, and resultant article | Holger Hofmann, Raymond L. Keating | 2014-12-30 |
| 7269123 | Wavelength selective coatings for optical disc security | Mark Timothy Turnage, Patrick Byrne, John Matthew Town | 2007-09-11 |
| 7074478 | Optical encoding | — | 2006-07-11 |
| 6160789 | Optical data storage disc | — | 2000-12-12 |
| 6011767 | Optical data storage disc with a visible holographic image and method for its manufacture | — | 2000-01-04 |
| 5533002 | Optical data storage compact disc and method for manufacturing the same | — | 1996-07-02 |
| 5452282 | Optical data storage disc | — | 1995-09-19 |