Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845132 | Hydrophilic porous membrane, method for production thereof, and plasma separator using said membrane | Okihiko Hirasa, Yoshio Suda, Makoto Onishi, Yukio Seita | 1989-07-04 |