Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12294814 | Watching monitoring device and watching monitoring method | Masuo Oku | 2025-05-06 |
| 12153734 | Image display device and image display method | Yasunobu Hashimoto, Yoshinori Okada, Hitoshi Akiyama, Nobuo Masuoka, Nobuaki Kabuto | 2024-11-26 |
| 8406100 | Optical disc device and tracking servo control circuit therefor | Hiroharu Sakai, Hajime Nishimura | 2013-03-26 |
| 8315131 | Optical disc apparatus and back off control method for objective lens | Akihiro Ashida, Jinya Ikeda, Satoru Moriya | 2012-11-20 |
| 4769722 | Apparatus for recording and reproducing a video signal and for recording and reproducing a PCM audio signal on forward and reverse tape travelling directions | Shigeyuki Itoh, Yoshizumi Watatani, Akira Shibata | 1988-09-06 |
| 4677645 | Audio signal transmission system having noise reduction means | Yoshizumi Watatani, Shigeyuki Itoh | 1987-06-30 |