Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5876270 | Method and apparatus for polishing surface of magnetic recording medium | Akihiko Konno | 1999-03-02 |
| 5669804 | Magnetic tape surface treatment method and apparatus | Kazuo Takahashi, Mitsuhiro Ono | 1997-09-23 |