Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4387223 | Process for preparing 2(1H)-quinazolinone derivatives | Michihiro Yamamoto, Masao Koshiba, Hisao Yamamoto | 1983-06-07 |
| 4202974 | Process for preparing 3,4-dihydro-2(1H)-quinazolinone derivatives | Michihiro Yamamoto, Masao Koshiba, Hisao Yamamoto | 1980-05-13 |