Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857079 | Co-poly (imide ether) copolymer from diaminated polyalkyleneglycol | — | 1989-08-15 |
| 4812457 | Prostaglandin derivatives | Shuh Narumiya, Osamu Hayaishi, Masami Tsuboshima | 1989-03-14 |