Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5808806 | Optical element having regions of different refractive indices for refraction of light transmitted therethrough and wherein the regions form a refractive lens and method of fabricating the same | Glenn F. Guhman, Michael Ray | 1998-09-15 |
| 5585968 | Optical elements having regions of different indices of refraction and method of fabricating the same | Glenn F. Guhman, Michael Ray | 1996-12-17 |