Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867913 | 12.alpha.-substituted pregna-1,4-diene-3,20-diones | Masayasu Bunno, Masao Tsuji, Tsutomu Sugiura, Yoshihiro Ichihara | 1989-09-19 |
| 4867914 | Pregnane derivatives and method of producing the same | Masayasu Bunno, Masao Tsuji, Yoshihiro Ichihara | 1989-09-19 |