Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5059018 | Colored contact lens | Masuji Ichihara | 1991-10-22 |
| 4451629 | Contact lens and process for preparing the same | Kyoichi Tanaka, Tatsutoshi Nakajima, Kazuhiko Nakada, Nobuyuki Toyoshima | 1984-05-29 |