Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4290954 | Tetrahydroxanthone derivatives | Kazuhiro Onogi, Hisashi Kunieda, Kiyoshi Kawamura, Masami Shiratsuchi, Masahiko Nagakura +1 more | 1981-09-22 |
| 4216225 | Methylmethioninesulfonium compounds, process for their preparation, and pharmaceutical compositions containing them | Masami Shiratsuchi, Kiyoshi Kawamura, Hisashi Kunieda, Toshihiro Akashi, Masahiko Nagakura | 1980-08-05 |