Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6336945 | Abrasive composition for the base of magnetic recording medium and process for producing the base by using the same | Yuzo Yamamoto, Manabu Shibata, Toshiya Hagihara | 2002-01-08 |