Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4930866 | Thin film optical variable article and method having gold to green color shift for currency authentication | Roger W. Phillips | 1990-06-05 |
| 4779898 | Thin film optically variable article and method having gold to green color shift for currency authentication | Roger W. Phillips | 1988-10-25 |
| 4705300 | Thin film optically variable article and method having gold to green color shift for currency authentication | Roger W. Phillips | 1987-11-10 |
| 4705356 | Thin film optical variable article having substantial color shift with angle and method | Roger W. Phillips | 1987-11-10 |
| 4565719 | Energy control window film systems and methods for manufacturing the same | Roger W. Phillips, Patrick K. Higgins | 1986-01-21 |
| 4422721 | Optical article having a conductive anti-reflection coating | Robert E. Hahn, Thomas R. Jones | 1983-12-27 |