Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5699175 | Multiphoton photorefractive holographic recording media | — | 1997-12-16 |
| 5684612 | Method and system for maintaining and controlling the signal-to-noise ratio of hologams recorded in ferroelectric photorefractive materials | Lambertus Hesselink | 1997-11-04 |