Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9960739 | Semiconductor integrated circuit | — | 2018-05-01 |
| 8031888 | Electronic apparatus having audio output units | Akio Ogura | 2011-10-04 |
| 7184561 | Electronic apparatus having audio output units | Akio Ogura | 2007-02-27 |
| 7120260 | Jack circuit and portable type electronic apparatus and telephone set using the same | Isao Yamamoto | 2006-10-10 |