Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857196 | Porous hollow fiber membrane and a method for the removal of a virus by using the same | Sei-ichi Manabe | 1989-08-15 |
| 4808315 | Porous hollow fiber membrane and a method for the removal of a virus by using the same | Sei-ichi Manabe | 1989-02-28 |