Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808587 | 5-substituted pyrido[2,3-d]pyrimidine-2,4-diones | Yoshiyuki Kurimoto, Norihiko Kitamura | 1989-02-28 |
| 4808618 | Substituted 1,3-dialkylpyrido[4,3-d]pyrimidine-2,4-diones | Yoshiyuki Kurimoto, Norihiko Kitamura | 1989-02-28 |