Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874522 | Polysulfone hollow fiber membrane and process for making the same | Takehiko Okamoto, Akinori Sueoka, Ichiro Kawata, Hiroyuki Akasu | 1989-10-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874522 | Polysulfone hollow fiber membrane and process for making the same | Takehiko Okamoto, Akinori Sueoka, Ichiro Kawata, Hiroyuki Akasu | 1989-10-17 |