Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5817726 | Water-absorptive soft ocular lens material, water-absorptive soft ocular lens shaped product made thereof, water-absorptive soft ocular lens made thereof and process for its production | Kazuhiko Nakada, Shoji Ichinohe, Toshio Yamazaki | 1998-10-06 |
| 5670594 | Low water-absorptive ocular lens material, low water-absorptive ocular lens shaped product made thereof, low water-absorptive ocular lens made thereof and process for its production | Kazuhiko Nakada, Shoji Ichinohe, Toshio Yamazaki | 1997-09-23 |