Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672409 | Polyester film reflector for a surface light source | Kenji Tsunashima, Seizo Aoki | 1997-09-30 |
| 5654394 | Thermoplastic resin film | Katsuya Toyoda, Akiko Yamamoto, Kenji Tsunashima, Toshiya Ieki | 1997-08-05 |