Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816479 | Xanthone derivatives and process for producing the same | Takashi Mori, Takashi Dan, Michitaka Akima | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816479 | Xanthone derivatives and process for producing the same | Takashi Mori, Takashi Dan, Michitaka Akima | 1989-03-28 |