Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7874673 | Progressive power lens and method of designing the same | Toshihide Shinohara, Tadashi Kaga, Ayumu Ito | 2011-01-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7874673 | Progressive power lens and method of designing the same | Toshihide Shinohara, Tadashi Kaga, Ayumu Ito | 2011-01-25 |