Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696865 | Optical waveguide having two or more refractive indices and method of manufacturing same | Karl W. Beeson, Paul Michael Ferm | 1997-12-09 |
| 5657408 | Optical device comprising a plurality of units having at least two geometrically-differentiated tapered optical waveguides therein | Paul Michael Ferm, Karl W. Beeson, John C. Schweyen, Okan K. Tezucar | 1997-08-12 |
| 5598281 | Backlight assembly for improved illumination employing tapered optical elements | Karl W. Beeson, Paul Michael Ferm | 1997-01-28 |