Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4644435 | Micro floppy disc cassette | Tsuneo Nemoto | 1987-02-17 |
| 4581670 | Flexible magnetic disc cassette with a slidably mounted shutter | Tsuneo Nemoto, Kazuo Ozawa | 1986-04-08 |
| 4544977 | Magnetic disc device | Kazuo Ozawa | 1985-10-01 |
| 4510546 | Flexible magnetic disc cassette | Shojiro Asami, Kazuo Ozawa | 1985-04-09 |