Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5412505 | Light polarizing spectacle lens | Mark G. Asmus | 1995-05-02 |
| 5286419 | Process for making a light polarizing spectacle lens | Mark G. Asmus | 1994-02-15 |
| 4426139 | Progressive addition lens | Yeo K. Kee | 1984-01-17 |
| 4362368 | Progressive power ophthalmic lens having wide transition corridor | — | 1982-12-07 |