Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806659 | Tannin compounds | Nishioka Itsuo, Nonaka Genichiro, Fujiwara Michihiro | 1989-02-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806659 | Tannin compounds | Nishioka Itsuo, Nonaka Genichiro, Fujiwara Michihiro | 1989-02-21 |