Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6818719 | Polymers and ophthalmic lenses in which they are used | Kazuhiko Fujisawa, Naoki Shimoyama | 2004-11-16 |
| 6689480 | Surface-treated plastic article and method of surface treatment | Naoki Shimoyama, Tadahiro Uemura | 2004-02-10 |