Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654082 | Easily tearable laminated film and method of manufacturing the same | — | 1997-08-05 |
| 5648107 | Porous film manufacturing apparatus | Yoichiro Kagawa | 1997-07-15 |
| 5593632 | Method of making a porous film | — | 1997-01-14 |