Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695386 | Cleaning method using abrasive tape | Katsumi Ryoke, Masaaki Fujiyama | 1997-12-09 |
| 5633068 | Abrasive tape having an interlayer for magnetic head cleaning and polishing | Katsumi Ryoke, Masaaki Fujiyama | 1997-05-27 |