Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695386 | Cleaning method using abrasive tape | Katsumi Ryoke, Keisuke Yamada | 1997-12-09 |
| 5639284 | Abrasive member | Katsumi Ryoke, Tadashi Ishiguro | 1997-06-17 |
| 5632789 | Abrasive tape | Katsumi Ryoke, Kazuko Hanai | 1997-05-27 |
| 5633068 | Abrasive tape having an interlayer for magnetic head cleaning and polishing | Katsumi Ryoke, Keisuke Yamada | 1997-05-27 |
| 5611826 | Abrasive tape | Katsumi Ryoke, Masami Sato | 1997-03-18 |