Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11252493 | Hearing device and earphone | Shinichiro Yanaga, Misae Shiba, Mikio Shiba | 2022-02-15 |
| D938595 | Earphone | Takashi Iwakura, Kei Koyama | 2021-12-14 |
| 11051097 | Installation structure of vibrator | Takashi Iwakura | 2021-06-29 |
| D720075 | Hearing aid | Kouji Sakuma, Misae Shiba | 2014-12-23 |