Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5010575 | Audio current pick-up device | Yozo Marutake, Motomu Asami | 1991-04-23 |
| 4489330 | Electromagnetic induction coil antenna | Yozo Marutake, Motomu Asami, Hideo Motohashi | 1984-12-18 |
| 4361733 | Hard-of-hearing aid appliance | Yozo Marutake, Yasuo Inaba, Kunihiko Fukuyama | 1982-11-30 |
| 4354061 | Sensing coil in hearing aid | Yozo Marutake, Takayuki KURITA | 1982-10-12 |