Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10805732 | Diaphragm or dust cap and speaker unit | Takeru Inoue, Hajime Yoshimura, Hiroyasu Kumo | 2020-10-13 |
| 8391512 | Broadcast wave receiving system | Atsushi Minakawa, Tetsuya Toyama | 2013-03-05 |
| 8036409 | Speaker cabinet and speaker using the same | Yushi Ono, Kosuke Heki, Koichi Sadaie, Hiroyuki Mizutani | 2011-10-11 |
| 7567684 | Speaker diaphragm and speaker using the same | Yushi Ono, Takeru Inoue | 2009-07-28 |
| 7102405 | Pulse-width modulation circuit and switching amplifier using the same | Koji Takatori | 2006-09-05 |
| 6984887 | Heatsink arrangement for semiconductor device | Norio Umezu, Kazutaka Murayama | 2006-01-10 |
| 6956954 | Surround-sound processing system | Kazumasa Takemura, Joji Kasai, Tetsuro Nakatake | 2005-10-18 |
| 6765449 | Pulse width modulation circuit | Kazutaka Murayama, Norio Umezu, Yoshitaka Handa, Shuichi HIZA | 2004-07-20 |