Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4387223 | Process for preparing 2(1H)-quinazolinone derivatives | Michihiro Yamamoto, Shigenari Katayama, Hisao Yamamoto | 1983-06-07 |
| 4228167 | Diuretic and vasodilating tricyclic quinazolines | Michihiro Yamamoto, Shunji Aono | 1980-10-14 |
| 4202974 | Process for preparing 3,4-dihydro-2(1H)-quinazolinone derivatives | Michihiro Yamamoto, Shigenari Katayama, Hisao Yamamoto | 1980-05-13 |
| 4183932 | Fused quinazolinones and preparation thereof | Michihiro Yamamoto, Hisao Yamamoto | 1980-01-15 |