Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5412505 | Light polarizing spectacle lens | Raoul F. van Ligten | 1995-05-02 |
| 5286419 | Process for making a light polarizing spectacle lens | Raoul F. van Ligten | 1994-02-15 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5412505 | Light polarizing spectacle lens | Raoul F. van Ligten | 1995-05-02 |
| 5286419 | Process for making a light polarizing spectacle lens | Raoul F. van Ligten | 1994-02-15 |