Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7496773 | Data recording/reproducing system using optical disk apparatus | Shinji Umehara, Ryotaro Hongo, Takayuki Honda, Hiroshi Tsuyuguchi | 2009-02-24 |
| 4914439 | Analog to digital conversion system utilizing dither | Tetsuji Ono | 1990-04-03 |