Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8659828 | Polarization preserving projection screen with engineered particle and method for making same | Gary D. Sharp, David A. Coleman, Joel Mikael Petersen, Ray Lewandowski | 2014-02-25 |
| 7429437 | Diffractive optical element and method of manufacture | Joel Mikael Petersen | 2008-09-30 |
| 6998196 | Diffractive optical element and method of manufacture | Joel Mikael Petersen | 2006-02-14 |