Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6569215 | Composition for polishing magnetic disk substrate | — | 2003-05-27 |
| 6478835 | Abrasive composition for polishing magnetic recording disk substrates | Kiyoshi Tada, Kenji Tomita | 2002-11-12 |
| 6478837 | Abrasive composition substrate for magnetic recording disks and process for producing substrates for magnetic recording disk | — | 2002-11-12 |
| 6152976 | Abrasive composition for disc substrate, and process for polishing disc substrate | Ken Ishitobi | 2000-11-28 |