Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817561 | Magnetic tape cassette | Kazuo Hiraguchi, Teruo Ashikawa, Atusi Takano | 2004-11-16 |
| 6804084 | Magnetic tape cassette having reduced friction against tape reels | Teruo Ashikawa, Hiroyuki Naito, Kiyoo Morita, Katsuki Asano, Masayoshi Moriwaki | 2004-10-12 |
| 6752269 | Magnetic tape cassette storage case | Kazuo Hiraguchi, Kiyoo Morita | 2004-06-22 |
| 6719232 | Magnetic tape cassette | Teruo Ashikawa, Kazuo Hiraguchi, Hiroyuki Naito | 2004-04-13 |
| 6712208 | Magnetic tape cassette storage case | Kazuo Hiraguchi, Kiyoo Morita | 2004-03-30 |
| 6688546 | Magnetic tape cassette | Kazuo Hiraguchi | 2004-02-10 |