Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5276669 | Synchronous recording and playback of left and right stereo channels on separate digital discs | Tsutomu Oohashi | 1994-01-04 |
| 5157557 | Multitrack system for PCM recording and playback of audio signals and supersonic waves | Tsutomu Oohashi | 1992-10-20 |