| 10057677 |
Electroacoustic transducer and acoustic resistor |
Yoji Honda, Kenzo Tsuihiji, Kenji Arai |
2018-08-21 |
| 9872098 |
Wiring structure for electroacoustic transducer for digital signal and headphone for digital signal |
Kenzo Tsuihiji, Yoji Honda, Kenji Arai |
2018-01-16 |
| 9800976 |
Electroacoustic transducer |
Yoji Honda, Kenzo Tsuihiji, Kenji Arai |
2017-10-24 |
| 9794682 |
Electroacoustic transducer and acoustic resistor |
Yoji Honda, Kenzo Tsuihiji, Kenji Arai |
2017-10-17 |
| 9609422 |
Headphone unit and ear muff unit |
Yoji Honda, Kenzo Tsuihiji, Kenji Arai |
2017-03-28 |
| 9503811 |
Digital microphone and position-to-frequency converter |
Koichi Maezawa |
2016-11-22 |
| D601124 |
Wireless headset |
Satoshi Uchimura, Hiroyuki Matoba |
2009-09-29 |
| D585048 |
Wireless headphone transmitter |
Satoshi Uchimura, Hiroyuki Matoba |
2009-01-20 |