Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4978486 | Method for preparing perforated film | Michiyasu Ito, Toshiyuki Ishii, Hajime Mushika, Tomohide Tanaka | 1990-12-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4978486 | Method for preparing perforated film | Michiyasu Ito, Toshiyuki Ishii, Hajime Mushika, Tomohide Tanaka | 1990-12-18 |