Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7171015 | Speaker apparatus | Kazuyuki Suda | 2007-01-30 |
| 6185060 | Changeover circuit in tape recorder | Kazuyuki Suda | 2001-02-06 |
| 6141425 | Sound quality adjustment circuit | Toshiya Murakami | 2000-10-31 |
| 5208513 | Monitoring circuit for a light emission device | — | 1993-05-04 |
| 4636878 | Combined detector circuit for detecting a tape end or unrecorded area of a tape | — | 1987-01-13 |