Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869857 | Process for producing porous membranes | Hajime Itoh, Hiroshi Takahashi, Hideaki Habara | 1989-09-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869857 | Process for producing porous membranes | Hajime Itoh, Hiroshi Takahashi, Hideaki Habara | 1989-09-26 |