Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5694251 | F.theta. lens | Katsumi Shimada, Kazuhiro Tsujita | 1997-12-02 |
| 5673137 | Condenser optical system for light scanning system | Katsumi Shimada, Hiromi Ishikawa, Sumihiro Nishihata | 1997-09-30 |