Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6666371 | Sealing system for electronic device and sealing method therefor | Yuji Ikeda, Katsuhiko Takahashi | 2003-12-23 |
| 6256274 | Data erasure preventing method and circuit thereof and optical disc apparatus mounting the same | Yuji Arataki | 2001-07-03 |
| 6185172 | Rotation control apparatus, reproduction apparatus to which rotation control apparatus is applied, and rotation control method | — | 2001-02-06 |
| 6150888 | Phase locked loop circuit, reproduction apparatus and phase locking method | — | 2000-11-21 |
| 5939948 | Phase locked loop circuit and reproducing apparatus | — | 1999-08-17 |
| 4395739 | Recording/reproducing apparatus with selective attenuation of reproduced signals to facilitate comprehension of external speech signals | Toshio Asai | 1983-07-26 |
| 4360846 | Operating mode change-over apparatus in tape recording and/or reproducing apparatus | Toshio Asai, Toshiro Ohta, Kunio Shimizu | 1982-11-23 |