Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8675897 | Ear-muff type headset for two-way communication | Mikio Fukuda, Tomoya Atsumi | 2014-03-18 |
| 6993365 | Waterproof transceiver having PTT switch, sound input/output portion and main portion formed into independent units | Mikio Fukuda, Jiro Nawa | 2006-01-31 |
| 6724900 | Hearing aid | — | 2004-04-20 |
| 6222657 | Infrared transceiving apparatus | Hiroaki Yanagisawa, Jiro Nawa, Kazuji Kobayashi | 2001-04-24 |
| 6175115 | Method and apparatus for catching infrared rays in on-vehicle signal transmission system using infrared rays | — | 2001-01-16 |