Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866081 | Microbicidal preservative composition | Yosuke Ito, Sakae Katayama | 1989-09-12 |
| 4839373 | Quaternary ammonium and benzothiazole microbicidal preservative composition | Yosuke Ito, Sakae Katayama | 1989-06-13 |