Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5910518 | Oxygen permeable contact lens having high durable hydrophilic surface and method for producing the same | Kazuhiko Nakada, Naomi Saito, Misako Nishibayashi, Atsuyuki Nakamura | 1999-06-08 |
| 5708050 | Oxygen permeable contact lens having high durable hydrophilic surface and method for producing the same | Kazuhiko Nakada, Naomi Saito, Misako Nishibayashi, Atsuyuki Nakamura | 1998-01-13 |
| 5426133 | Water-absorptive contact lens | Masanori Kadoya, Keiji Sugimoto, Tsuyoshi Watanabe, Noriko Iwata | 1995-06-20 |