Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814124 | Preparation of gas permeable porous film | Mari Aoyama, Michiyasu Ito, Syoichi Tsuji, Toshiyuki Ishii | 1989-03-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814124 | Preparation of gas permeable porous film | Mari Aoyama, Michiyasu Ito, Syoichi Tsuji, Toshiyuki Ishii | 1989-03-21 |