Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6221301 | Method of producing thermoplastic resin films and apparatus for producing the same | Kenji Tsunashima, Masaharu Toyama, Shunichi Osada, Nobutsugu Chigira, Hiroshi Yoshimura | 2001-04-24 |
| 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 |