Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4942149 | Crown ether compound and separating agent | Tomohiko Yamaguchi, Kouzou Tachibana | 1990-07-17 |
| 4842935 | Filler for separating optical isomer | Koichiro Nishimura, Tomohiko Yamaguchi, Masaaki Sugiura | 1989-06-27 |