Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822489 | Aromatic polysulfone type resin hollow fiber membrane and a process for producing the same | Takashi Nohmi | 1989-04-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822489 | Aromatic polysulfone type resin hollow fiber membrane and a process for producing the same | Takashi Nohmi | 1989-04-18 |