Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6322215 | Non-progressive trifocal ophthalmic lens | — | 2001-11-27 |
| 5147437 | Invisible flat-top mold blank and method for manufacturing same | — | 1992-09-15 |
| 5131738 | Lens blank | — | 1992-07-21 |
| 5054904 | Aspheric lens blank | — | 1991-10-08 |
| 4883524 | Invisible flat-top mold blank and method for manufacturing same | — | 1989-11-28 |
| 4787730 | Eyeglass assembly | — | 1988-11-29 |
| 4573777 | Aspheric spectacle lens blank | — | 1986-03-04 |
| 4538887 | Aspheric spectacle lens blank | — | 1985-09-03 |