Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6146244 | Substrate produced by using alumina particles as an abrasive | Takeshi Atsugi, Manabu Shibata | 2000-11-14 |
| 5868604 | Abrasives composition, substrate and process for producing the same, and magnetic recording medium and process for producing the same | Takeshi Atsugi, Manabu Shibata | 1999-02-09 |