Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6603863 | Headphone apparatus for providing dynamic sound with vibrations and method therefor | — | 2003-08-05 |
| 5867582 | Headphone | — | 1999-02-02 |
| 5544253 | Earphone assembly | Kazunori Kono | 1996-08-06 |
| 5412733 | Acoustic reproducing apparatus | Koichi Higuchi, Kazutoshi Yamaguchi, Eiichi Takakura, Masataka Saito | 1995-05-02 |
| 5222151 | Earphone | Kazunori Kouno | 1993-06-22 |
| 4939601 | Playback apparatus having a single mode selecting pushbutton | Hirotaka Endo, Hiroshi Hamanaka | 1990-07-03 |