Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6018001 | Process for producing contact lens with hydrophilic surface and contact lens obtained thereby | Tatsutoshi Nakajima | 2000-01-25 |
| 6015874 | Crosslinkable compound and an optical material employing it | — | 2000-01-18 |
| 5869547 | Ocular lens material | — | 1999-02-09 |
| 5811502 | Ocular lens material | — | 1998-09-22 |
| 5703143 | Ocular lens material | Kazuhiko Nakada, Toshio Yamazaki, Shoji Ichinohe | 1997-12-30 |
| 5605942 | Contact lens material | Kazuhiko Nakada, Shoji Ichinohe, Toshio Yamazaki, Hideto Kato | 1997-02-25 |
| 5543442 | Ocular lens material | Kazuhiko Nakata, Shoji Ichinohe, Toshio Yamazaki, Hideto Kato | 1996-08-06 |
| 5502086 | Water-absorptive contact lens and process for its production | Keiji Sugimoto | 1996-03-26 |
| 5397511 | Method of producing intraocular lens formed from polymide powder | Kenichi Ishihara, Kazuhiko Nakada, Kunihisa Yoshida | 1995-03-14 |