Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7715579 | Tone control circuit for hearing aid and the like | Takashi Kuno, Masahiko Ohgushi | 2010-05-11 |
| 6761173 | Ear plug to be inserted into the external auditory canal | Takashi Kuno, Masahiko Ohgushi | 2004-07-13 |