Issued Patents 1994
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5300465 | Photochromic glasses which darken to a pink hue | Luc Grateau | 1994-04-05 |
| 5292553 | Ultra thin zircon coating and membrane | Phillipe J. A. M. Leture, Alain Dauger | 1994-03-08 |
| 5288669 | Glasses with very high index of refraction and low density | Luc Grateau, Pascale Laborde | 1994-02-22 |
| 5275979 | Colored glasses and method | Nicholas Francis Borrelli, David W. Morgan, Dennis W. Smith | 1994-01-04 |