Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6170954 | Overhead projector of the under mirror type | Kazuhiro Sukenari | 2001-01-09 |
| 5683160 | Overhead projector with high illuminance lamp as light source | Mamoru Fukaya, Tatsuo Kinoshita | 1997-11-04 |