Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5971541 | Correction of astigmatism using rotationally symmetric contact lenses | J. Warren Blaker | 1999-10-26 |
| 5244377 | Toric posterior and anterior curve dies for making corneal contact lenses | — | 1993-09-14 |
| 4605524 | Method and master-die for casting a bifocal contact lens in a single piece | — | 1986-08-12 |