Issued Patents All Time
Showing 1–25 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8270655 | Headphone device | Tomohiro Ito | 2012-09-18 |
| D599777 | Headphone | — | 2009-09-08 |
| D598892 | Radio receiver | Jo Wada | 2009-08-25 |
| D588099 | Headphone | — | 2009-03-10 |
| D587678 | Headphone | — | 2009-03-03 |
| D550638 | Combined disc player and amplifier | — | 2007-09-11 |
| D547750 | Speaker box | — | 2007-07-31 |
| D547286 | Combined disc player and amplifier | — | 2007-07-24 |
| D547287 | Combined disc player and amplifier | — | 2007-07-24 |
| D546348 | Audio player | — | 2007-07-10 |
| D542775 | Speaker box | — | 2007-05-15 |
| D540310 | Speaker box | — | 2007-04-10 |
| D540309 | Speaker box | — | 2007-04-10 |
| D505129 | Audio/data disc player | — | 2005-05-17 |
| D505130 | Audio/data disc player | — | 2005-05-17 |
| D453015 | Headphone | — | 2002-01-22 |
| D450680 | Radio receiver | — | 2001-11-20 |
| D443261 | Headphone | — | 2001-06-05 |
| D435537 | Headphone | — | 2000-12-26 |
| D435520 | Selector for selecting audio visual apparatuses | — | 2000-12-26 |
| D435035 | Speaker box | Yoshiaki Kumagai | 2000-12-12 |
| D433013 | Microphone | Hidefumi Goto | 2000-10-31 |
| D431817 | Microphone | Hirohisa Tanaka | 2000-10-10 |
| D431543 | Disc player | — | 2000-10-03 |
| D430133 | Combined tape player and radio receiver | — | 2000-08-29 |