Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5132384 | Optical material of low specific gravity and excellent impact resistance, optical molding product using the optical material and manufacturing method thereof | Tatsuhito Matsuda, Masahiro Yoshida, Tetsuya Yamamoto, Manabu Takemura | 1992-07-21 |