Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6008773 | Reflector-provided dipole antenna | Tohru Matsuoka, Hiroyuki Arai, Masayuki Nakano | 1999-12-28 |
| 5351225 | Optical recording and reproducing apparatus having a plurality of light spots | Takashi Ishida, Shunji O'Hara, Kenzo Ishibashi | 1994-09-27 |
| 5161243 | Tracking system for an optical recording/reproducing apparatus having a plurality of light spots | Takashi Ishida, Shunji O'Hara, Kenzo Ishibashi | 1992-11-03 |
| 4700336 | Optical recording and playback apparatus using plural light spots | Tomio Yoshida, Yoshinobu Nakata, Shunji Ohara | 1987-10-13 |
| 4358770 | Multiple frequency antenna feed system | Motoo Mizusawa, Fumio Takeda | 1982-11-09 |
| 4216357 | Optical play-back system for recorded signals with oscillating beam | Norio Iwasaki, Hiroyuki Ito, Ikuya Koike | 1980-08-05 |