Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5598280 | Film lens and a surface light source using the same | Toshikazu Nishio, Michiko Takeuchi | 1997-01-28 |
| 5592332 | Renticular lens, surface light source, and liquid crystal display apparatus | Toshikazu Nishio, Yoshiyuki Yamashita, Hiroyuki Amemiya, Michiko Takeuchi | 1997-01-07 |