Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5439858 | Hydrated granular carrier prepared from polyvinyl alcohol and activated charcoal for biological treatment apparatus | Kozo Konishi, Shuzo Fujii, Yoshiyuki Takashima | 1995-08-08 |