Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9456238 | Portable audio/video playback apparatus | Masaru Kato | 2016-09-27 |
| 8918140 | Portable audio/video playback apparatus | Masaru Kato | 2014-12-23 |
| 8145266 | Portable audio/video playback apparatus | Masaru Kato | 2012-03-27 |
| 5777970 | Optical disk readout apparatus | Seiji Kajiyama, Yoichi Tsuchiya, Shuichi Ichiura, Katsutoshi Hibino | 1998-07-07 |
| 5363364 | Audio data recording/reproducing apparatus having digital high-speed dubbing function | Kenji Torazawa, Yasuhiro Ishii, Shin'ichiro Tomisawa, Nagatoshi Sugihara | 1994-11-08 |
| 5124812 | Digital recording and reproducing apparatus for muse signal | Kenichi Sato, Yoshinobu Nishikawa, Norihisa Takayama | 1992-06-23 |
| 5012351 | Stereoscopic video disc record and recording and reproducing apparatus therefor | Haruo Isono, Minoru Yasuda, Hiroshi Watanabe, Toshiaki Hioki, Yoshihiko Morita +1 more | 1991-04-30 |
| 4918539 | Frequency multiplexing circuit in optical video disc recorder | Toshiaki Hioki, Yoshihiko Morita, Hiroshi Watanabe | 1990-04-17 |