Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5019920 | Magnetic tape with an R-DAT format | Kuniyoshi Otsuki | 1991-05-28 |
| 4939595 | Digital audio tape record/play-back system for recording/playing back character data together with digital audio data | Kuniyoshi Otsuki | 1990-07-03 |
| 4833549 | Digital audio tape record/play-back system for recording/playing back character data together with digital audio data | Kuniyoshi Otsuki | 1989-05-23 |
| 4694723 | Training type electronic musical instrument with keyboard indicators | Isao Shinohara | 1987-09-22 |