Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847390 | Cyclopentane derivatives | Takayoshi Yamauchi, Kaneaki Hattori, Shunichi Ikeda | 1989-07-11 |
| 4795831 | Cyclopentane derivatives | Takayoshi Yamauchi, Kaneaki Hattori, Shunichi Ikeda | 1989-01-03 |