Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9930436 | Bone conduction speaker | — | 2018-03-27 |
| 9532123 | Bone conduction speaker unit | — | 2016-12-27 |
| 9451357 | Bone transmission earphone | — | 2016-09-20 |
| 9253563 | Bone conduction speaker unit | — | 2016-02-02 |
| 8675897 | Ear-muff type headset for two-way communication | Tomoya Atsumi, Shouji Fujino | 2014-03-18 |
| 8416978 | Vibration pickup microphone | — | 2013-04-09 |
| 8333132 | Carbide rotary tool | Youichiroh Shimoda | 2012-12-18 |
| 7983431 | Bone conduction device and tympanum thereof | — | 2011-07-19 |
| 7639825 | Bone-conduction handset | — | 2009-12-29 |
| 7512425 | Portable telephone using bone conduction device | — | 2009-03-31 |
| 7419874 | Method of manufacturing semiconductor device with capacitor and transistor | Tatsuya Fujishima, Yuji Tsukada, Keiji Ogata, Izuo Iida | 2008-09-02 |
| 7162280 | Handset for a communication unit | — | 2007-01-09 |
| 7099487 | Microphone with arm | — | 2006-08-29 |
| 7076077 | Bone conduction headset | Tomoya Atsumi, Kazuji Kobayashi | 2006-07-11 |
| 7033933 | Manufacturing method of semiconductor device | — | 2006-04-25 |
| 6999732 | Transceiver adapted for mounting upon a strap of facepiece or headgear | Tomoya Atsumi | 2006-02-14 |
| 6993365 | Waterproof transceiver having PTT switch, sound input/output portion and main portion formed into independent units | Shouji Fujino, Jiro Nawa | 2006-01-31 |
| 6950682 | Transceiver | Takeshi Takeda, Tomoya Atsumi | 2005-09-27 |
| 6839443 | Bone conduction speaker | — | 2005-01-04 |
| 6456721 | Headset with bone conduction speaker and microphone | — | 2002-09-24 |
| 6141427 | Bone-conduction speaker | — | 2000-10-31 |