Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869909 | Process for producing a medical vinyl chloride resin material | Hideo Takahashi | 1989-09-26 |
| 4822615 | Antithrombic resin composition | Hideo Takahashi, Akihiko Isomura | 1989-04-18 |