Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10401650 | Spectacle lens, manufacturing method, supply system, and supply program thereof | Ayumu Ito, Kazuma Kozu | 2019-09-03 |
| 10288903 | Progressive addition lens | Toshihide Shinohara, Ayumu Ito, Hiroshi Asami | 2019-05-14 |