Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5354595 | Surface-roughened polyester film | Tsuneo Tamura, Katsuyuki Touma, Minoru Kishida, Yoshiaki Kozuka, Hiroyuki Matsuda +3 more | 1994-10-11 |
| 5204418 | Light-weight polyester film and process for its production | Kenji Yasue, Katsuyuki Toma, Minoru Kishida, Yoshiaki Kozuka | 1993-04-20 |